Eliminate the guards and imp inside and gather ammo and use the health station. Locate the freight loader control tower to unlock the entrance to the caverns. Main Objective: Send distress transmission to orbital fleet. Point the rocket launcher at the ground, shoot and jump. Enter the door marked executive offices. Crawl through and drop into sub level 9. Avoid standing in front of it. Note the Lab A meeting room number: 627. Activate the service lift to reach the lower levels of the caverns. The discovery of this chamber unearthed the stone tables, soul cube, and many other valuable artifacts. After defeating the imps, beware of the soldiers and their chain guns. Look for opportunities to shoot an explosive barrel to cause blast damage against nearby foes. It's not alone. Use it and a soldier teleports in behind you. Gather the health and ammo and continue through the next door. Defeat it with your new rocket launcher. Speak with Campbell. Find the airlock and return outside. Although they're hovering, the cacodemons can be lured into chokepoints like doorways and halls. Grab the shotgun from the open crate ahead. Sector 2 primarily refines and recycles chemical and biological waste. Return down and use the lift. You can also use the larger crates in the room to quickly leap to the armor on the upper catwalk (though there's a nearby lift that will take you there directly). From the generator, move through the door at the top of the steps then take a right through the next door. Also look in a niche at the top of the curved pipe. Go through the door. Proceed toward the door on the left. The health at the intersection is an obvious trap. Objective: Retrieve Data Linker. Approach the upper door and smash the soldier on the other side. Return to the locked door and use the ACO card. When you press the trigger, the chain gun begins to spin and moments later the weapon starts to fire. Use corners as cover against their rockets. Objective: Alpha Access Elevator. Grab Steve Tooloose's PDA on the console and watch the BFG info video if you wish. Open the locker using code 371. Switch to another weapon and use the pillars as cover against the knight's melee and projectile attacks. As the door opens, blast the imp that leaps at you. Maneuver through the lobby corridor and return to the elevators. If you charge the BFG too long, it explodes in your hands--likely instant death. Doom 3 Campaign: Part 1 (Chapter-01) Mars City Mars City Hangar: Security Checkpoint: Departure Lounge: Mars City Reception: (On the PDA issued by H. Feiner and On a desk near H. Feiner) Central Access Junction: Central Access: Command Access Junction: Common Area: (Disk not collectable - watch on overhead video) Marine Command Access: Reach this console and you'll receive a video uplink. Go onto the catwalk and defeat the two imps to the left. Continue up the back stairs and face off against several imps. Pummel these imps once enhanced by your berserk power-up. Main Objective: Locate the military transmission card. A third imp appears near the other office door. Return to the previous room and the opposite exit door. You can't survive for long on Mars' surface. Go through the door on the right. Activate your flashlight and proceed. There's a revenant that patrols the bottom (try to kill him using the barrel) and a second that arrives from behind. updated Oct 15, 2012 A Doom 3 Walkthrough . Mars City houses the primary marine operations control room as well as the main administrator's office. Kill some ticks then check out the security door in the left corner for a new objective. The security station includes a PDA and some health. Crush the Vagary to continue to the next level. It includes code for cabinet #039--the code is 102. Move into the office on the right and use the console--which triggers the arrival of the demon. Ready your pistol and exit. Get to a pillar and use it as cover against the mancubus' weaponry. Return to the main hall. Proceed into operations. More teleporting creatures arrive as you search the back corner of the room. A cacodemon appears. Descend into the cavern and pick up the berserk power-up. The EnPro plant provides primary power to the Communications Tower and backup power to the entire Mars UAC Facility. There's a broken storage area containing ammo and a rocket launcher. Go right and locate the control room; defeat the monsters inside. There's also a health station in the right corner. Kill it from long-range with the plasma gun. Beware of the imp that appears behind you. Don't waste strong weapon ammunition on these enemies. Listen for the cries of help. Pick up oxygen and find the next airlock in the back right corner. Expect opponents to move through this chamber frequently moving to and from the reactor room and to the armor in the cave area. Grenades are good against monsters that run straight toward your position, like demons or commando soldiers. Face the console on the right and pick up Henry Nelson's PDA. Open it with the code 0508. Follow it through the subsequent rooms and halls. Inside are the BFG 9000 and some armor. You need a maintenance PDA to unlock the lift. Battle the hell knight around a pillar. Return to the intersection. Some ingenuity--and box pushing--can get you inside this room and to the plasma cells. Exit the elevator and watch the cut scene. The shotgun does work but you'll have to be agile to avoid the demon's gnarly bite. Something is throwing explosive barrels at you. Follow the sentry bot along the long route to the next lift. It's dark. I have to find the main Portal. Continue through the next unlocked passage. Yes, this boss fires the BFG. Read the email for the code to cabinet #064--the code is 651. Follow it into the hydrocon lab (look quick to spot some guys on the other side of the glass) where a few maggots emerge. Objective: Reach old comm. Read its emails for the programmers' list of "thank yous". Use pad 2 security to enter the locked security office. Grab the keycard in this observation lounge. Move to the back corner of the room and retrieve the data linker next to the corpse. The lost souls are fiery heads that swoop through the air and attack with a virtual "headbutt" attack. Doom 3 Upon arriving to Mars, the player finds an email in regards to a missing staff, which happens to be Ishii himself. Snag some stuff off of the crate and continue toward the executive offices. Exit and go through the research entrance. Activate this console to enable the lights and unlock nearby doors. Objective: Delta Power Failure. Find health on the right. Open the door into the central corridor and battle the soldiers and revenant. Make your way to the third teleportation chamber. The second email reveals a communications cabinet code: 246. Crawl through the vent and drop out into the service tunnel. Yes, this boss fires the BFG. Defeat the four imps that arrive (one to the far right). Get off and approach the lift. This also triggers the arrival of an imp and soldier. Scurry up the ladder, defeat more spiders, and then go left through the transfer bay into the next level. Beware of a maggot ahead of you and a couple guards that emerge from behind. It's lights out literally! When you reach Site 3, enter the office and find P. Rogers. Teleporter distance is limited, serving only to test biological effects of matter transference. Work your way through the service tunnel. Go around to the ladder and ascend. Return to the hall and go into the door on the left. One is open; you don't have the code for the other yet. Explore the floor and take the lift up to the second level of the CPU lab. Several guards await you here. Enter the other door into the Site 3 hub. It's best just to stay in one of the sight chambers and lure the souls through the chokepoint. This offers excellent opportunity to ambush an opponent making a run for the rocket launcher. Often a single up-close blast eliminates a zombie threat, though two might be required. Switch to your chain gun and remain on the broken lift. Blast them then find a med kit in their dark corner. When facing an imp, maneuver as close as possible and aim the shotgun at the imp's upper torso. The shotgun: then and now. Crush a soldier and demon and reach the door in the back corner. The next hall contains a trio of guards. Though not dangerous as a single unit, the trites and ticks are intimidating in large numbers. Maneuver through the slime and drop down onto the catwalk you crossed earlier. Imps have a way of appearing behind you. Like the imp, the hell knight tosses a projectile attack from long-range and engages with brute melee force at close-range. The cyberdemon will follow you. Open the next door and trigger a couple guards on the upper floor. Circle strafe around and avoid being in front of him. First step into the BATHROOM through the left doorway, kill the zombie inside, and grab the armor and shells inside. You've located the scientist. He'll pop out as you enter near the med kit; an imp appears behind you as well. One is broken and the other requires a clearance you don't have. The communications tower is the primary link for off-planet communications. After years of anticipation, id Software returns to Mars for a lone marine's battle against the demons of Hell. Enter the infirmary and grab Mark Caseon's PDA. Turn around and find a zombie about to ambush you. Move down the unexplored hallway and open the door into marine command access. Jump through the broken glass and search the room for grenades, ammo, and health. The lift malfunctions near the bottom. There's a guard posted near a door to your right; can't go there yet. There's also some hidden ammo, health, and armor in the room. Site 3 A hellknight spawns at the end of the hall as you make your way forward. A hell knight arrives from here; eliminate him with your plasma gun or shotgun at close-range. Use the balcony. A cut scene interrupts the action; you receive the transmission card. Proceed through the open area. Also pick up Kyle Berger's PDA. When you do, an imp appears. If there's more than one, expect them to be at opposite corners of the area, which creates a difficult fight with rockets flying in from multiple locations. Continue through the next door to find the storage locker mentioned in the PDA. Retrieve the Data Linker to allow Delta Lab Control Access. Since the Vagary is hurling objects at you constantly, it pays to defeat the beast as quickly as possible. When battling humanoid enemies, aim for the head for fastest killing results. Objective: Access Lower Levels. As you start down the path, cherubs spawn behind you. A hell knight enters from the right side; the back left corner contains health. Exit into the next hall. Another waits for you behind the next door and a third down the next hall. Use the plasma gun against just about anything in the game but it's best to save the cells for the toughest foes, such as hell knights, revenants, mancubus, or arch viles. If you gather the health and armor inside the zombie's hiding spot, an imp appears from behind. Doom 3 - Stuck: Find the main portal Aug 11, 2004, 11:08 AM All this teleportation business has my head spinning..how the feck do I reach the main portal?? With the premium on ammunition, make your BFG shot count. Try to use the door panel and receive a new objective. Communications Transfer connects EnPro and Communications, and acts as a multipurpose facility for power distribution, equipment repair, and cargo transfer to other base sectors. ZPortal is the extension of the ZDoom Portal Gun WAD. . The shotgun is your best weapon in this situation. Find the data linker next to this corpse in the delta access lobby. Speak with M. Ryan. Go right and spot the health items in the recess below. At medium-range, develop a pattern. Some lost souls arrive when you grab it. Search terminal processing. The turrets help mow down the enemy presencejust stay out of the turrets' way. There are three total. Move down the hall and turn around when you hear the imp. Battle the imps and guards in the next room. Pick up the video disk and PDA off this desk. Enter chamber 1. These include the "z-sec" and commando variety. Allow the turrets to rip through the enemies that arrive. He reveals a code to access his tools--396--storage locker near maintenance elevator. Check the weapon and enemies section of this game guide for details on the best weapons to use against particular enemies. Beware of enemies coming from behind. Like every engine since idTech2 we find one closed source binary (doom.exe) and one open source dynamic library (gamex86.dll). The audio log reveals the cabinet code: 752. You can go to left two but you'll find it blocked. Back up and keep firing at the hell knight while remaining a safer distance. This crate contains some valuable plasma ammunition. It's near some crates along the back wall. Move into sec ops processing--the lights go out, which cues the zombies. Follow the door into the upper floors. Defeat him and grab the weapon for yourself. Now you must decide to transmit the message or cancel it. Walk forward and use the health station on the left if necessary. Shoot cacodemons out of the air, blast soldiers at long-range, or fire in burst shots to clear out ticks and lost souls. After the cut scene, four maggots attack you. Hop to the bottom and look at the table to find the keycard to the upper storage room. Approach the ladder in the left corner; a friend from above lowers it. An imp appears at the room's center and another emerges behind you. Enter stasis control and replenish your health at the station. Watch out for the guard and imp in the conference room on the right. It's a relatively large target and can be taken down with the machine gun, chain gun, or plasma gun. It's a chamber with entrances/exits on each of its four sides. Battle the imp in front of the lift. Move around to the right. Allow the sentry bot to take the brunt of the punishment and assist from safe cover. Start down. Go through door at the top. Doom 3's new machine gun is a solid weapon and fairly accurate at longer range. As you move inside, the lights switch off. These PDAs look like small red tablets and they're often found--but certainly not limited to--offices on top of consoles or desks. Don't let him get close! This is a powerful weapon and worth saving for closer encounters. Use the computer on the other side to unlock the checkpoint. As you clear out and move through corridors and rooms, check dark corners for ammo, health, or armor. Follow the hall to the reactor control room. Defeat a couple imps and a demon along the way. However, look up and shoot out the light to provide a bit more darkness (the light still flickers). Use the explosive barrel on the bottom as explosive assistance against any opponents wandering the ground floor. Enter the EP aerobic stabilizer room. You're now near the level's start. Enter this control room and speak with the technician for your next objective. Use the console to activate a sentry bot. Maintain the crosshair on the enemies head if you are using the weapon at close-range so you minimize possible damage. Follow the sentry bot to the elevator that leads to the lower maintenance levels. It pays to explore. Proceed to the right. Like zombies, the term "soldier" encompasses a lot of enemy types. Make your way to the old communications building. Check the door on the far left for a new objective. Push a crate to the right side of the console and jump up into the alcove. Defeat an imp and other minions. Battle the demon and imp ahead then slice and dice the zombie behind. Beware of a guard across the way; take him out with the machinegun. Open the door quietly and spot the creature before it spots you. Open it to recover some items. You'll notice some familiar textures in this unusual arcade game. Defeat it as fast as possible. Fire some rockets immediately to detonate the first BFG blast then try to keep cover between you and the Saboath. There's a health station to the left. Cross the hall and move to the upper balcony of the data library. Grab Marcus' Stanton's PDA from the desk. Move through the hall and kill the guard. When it does, be ready for battle! Use the health station. Defeat them then enter the checkpoint and use code 571 to open the heavy weapons locker to recover a rocket launcher. It will require much more agile maneuvering and strafing to avoid these enemies' attacks. It's possible, but tough, to dodge the incoming homing rockets up-close as you would an imp projectile. Finish off remaining enemies then find the open access hatch panel in the back left corner. A couple imps appear, including one behind you. Enter the second lift room. A shotgun blast at close-range can defeat an imp in a single blast. Here you'll find solutions for every objective and locations of weapons (including hidden weaponry), PDAs, and ammo and armor caches. Open it to find a plasma gun and ammo. Follow the hall to its end for Bill Tyson's PDA. Mow him down then blast the revenant around the left corner. Follow it into lower MFS control. Crush the Vagary to continue to the next level. Gather the ammo and armor from their location. There's a dark hiding spot to the left of the weapon. Continue to work your way along the sole path; battle some imps and soldiers along the way. Delta Labs - Sector 3 contains the second generation transfer platforms, able to transport variable distances to small portable receiving platforms. Enter the server door on the right for a couple cabinets. Detonate explosives to create blasts that can damage or kill nearby enemies. Ascend to the top. Defeat a soldier ahead then enter storage room DE3-2 on the right. Return to the bridge and proceed to central processing. Head through engineering and find the entrance to Alpha Labs Sector 3. Objective: Hazard Door Sealed. Point your chainsaw at them and slice and dice the lost souls as they approach. jordan12 Aug 7, 2004 Aug 7, 2004 #1 jordan12 [H]F Junkie Joined Dec 29, 2000 Messages 9,957 Guys, Been walking in circles. Exit through the opposite door. It fires a green ball of death that actually inflicts damage to anything in sight as it moves through the air. Defeat the imp. You have a choice of your teleport destination: pad 1 main or pad 2 balcony. Grab it and the video disk then stock up on ammo. Follow him along the engineering catwalks. Enter the freight cart terminal. Cycle these three vents quickly. Spot the cowering worker. The missing scientist was last seen heading that way. The last portion of Doom 3 takes place at Site 3. The floor bursts open. An additional duo of guards also waits down the hall. Gather the supplies. Walk forward and speak with security. Find the vent hatch in one of the side rooms. Move inside and call the lift. Battle a couple guards and a revenant as you maintain pursuit. It's also the room the berserk teleport transports you to. A couple machinegun guards approach. Move through the door in the back--beware of another imp that appears behind you. Aim for the upper body and head. Continue forward and encounter some more lost souls. Leap down through the window toward the EPD. Ready your shotgun (the best close-range weapon) and fire when the z-sec enters into your line of fire. Descend the ladder, kill another imp, and then ascend the stairs into the control room. Grab the PDA off of the desk but beware of the zombie behind you. Move into the adjacent room and speak with the wounded marine. You need to drop off to the closest platform. Move into the adjacent office (avoid being smashed!) Beware of lost souls flying around this chamber. It's a fairly open room with multiple floors. Practice effective weapons management. Find the id Software logo in the back corner. Imps lurk about so be ready with close-range weaponry. Explore chamber 2 access and be ready for spawned monsters, which include imps and a revenant. The projectile has good splash damage so you're likely to take some splash damage if you're too close. Locate the berserk in The Edge 2's central room. Go left and find the lift access door. You're now in the old comm. Follow the cavern around to the left. Be ready for them and eliminate with the chainsaw or other weapon. As you work your way through maintenance 1, a large group of imps teleports in around you. Use the health station on the left. Maneuver through the misty narrow room and to the intersection. Like the machine gun, keep the chain gun reloaded. You'll reach a balcony over the lobby. Speak with anyone you wish and be sure to check a room just to the left of the door into convergence chamber two. Reach the elevator and use it to reach satellite control. It leads to some ammo and armor--just watch your step. The floor drops. Some imps appear when you go inside so be careful standing around the explosive barrel. Exit and face off against a revenant then imp. The arch vile stands in place presenting an inviting target. They move slow and most are only dangerous up close where the zombie can maul you with its brute melee strength. Toggles the ability to walk through walls and fly. Unlike previous games, Doom 3's rocket launcher requires reloading, which makes it more difficult to wield. Destroy more cacodemons as you cross the bridge. Find the code online at www.martianbuddy.com. Blast the imp, watch for the projectile arm motion begin, strafe to dodge the projectile, and then resume firing against the imp. Go through the door and find the security station on the right. Stock up on plasma cells by transporting to pad two. Gather the ammo and health from the room. Scamper quickly and carefully through the open gate and reach the tunnel's end. A good counter would be the plasma or chain gun (as the commando gets closer). For instance, conserve ammunition against weak enemies like zombies. Find the unlocked door and proceed through. Defeat him then enter the lift and use the controls. The Delta Complex is the most advanced research facility on Mars. Grab more shotgun shells in the center. Return to the hall with the locked door; battle some guards along the way. Exit the elevator once you've reached the destination. Avoid long-range battles. Cross the catwalk to the ladder. Help this poor guythough it is funny to not help him. Defeat the creature on the catwalk as well as an imp to the left. The locker is just to the right and includes your first BFG cell. Go down, retrieve the supplies, then continue up and battle more lost souls. Push a box over to the broken glass and hop inside to gather the material. Cherubs arrive once all three are dead. Get ready to move! The upper right alcove also contains a chainsaw. Delta Labs' most unique feature is the power-up generator. Enter the door and descend the ladder. Enter, defeat the ticks, and then grab Robert Cody's PDA off of the conference desk. A surface, such as a wall, a floor, or a ceiling, becomes a "window" allowing to see another part of the level. A few more minions arrive. Get off the elevator and defeat the demon and imp. But as soon as he turns the corner, move up close and blast the imp with the shotgun. Getting it comes with a price. Use the generator then the lift to move on. Snag Adam Berneche's PDA off of the counter; listen to the audio file and read the emails. Proceed to the airlock. Utilize the pillars as cover and avoid standing in front of them and taking the punishment from their projectiles. Get onto the lift and ride up. At close-range, an accurate shotgun blast can eliminate these enemies in a single blast. Locate this button near the bottom of the desk to open a security hatch containing supplies. In the next area you'll encounter a sentry bot. Search storage rooms for armor, health, and ammo. Using Swann's PDA gain entrance into the CPU Complex. Move down the opposite hall instead. Finish all the monsters off then proceed onward. You're back in the initial room of the communications station. Objective: Enpro Plant. Turn around and spot the berserk power-up. You'll battle a revenant and imp on the way. Go to the opposite side of the terminal and enter the decontamination chamber. Combining the face of a child with the wings of an insect, and the claws of a badger, the cherub scoots along the ground until it reaches attack range where it lunges at you. Portals allow a map to have a geometry not normally possible in a "2.5D" engine such as Doom. More creatures appear as you move down the hall: a zombie and maggot to the front and then another zombie behind. Tackle the maggot before attempting to shoot the revenant up and to the right. Enter central maintenance but back out after triggering the monsters. Aces can only be gained through the monorail of CPU complex. The top of the reactor room holds another price. There's another exit out of this floor. The BFG 9000 is Doom's ultimate weapon. Defeat two cacodemons to the right. Defeat the maggot and imp then return to the security station to recover your oxygen then cross the vista hall to the other airlock area. The hell knight is a menacing humanoid giant. Exit and take him down with your pistol. Fire some rockets at his location or even use the BFG 9000 for the first time. Look in this alcove for a PDA and a storage cabinet. Our Doom 3 walkthrough includes a full walkthrough and tips on every weapon, as well as lists of cheat codes, cabinet codes, and easter eggs. An imp teleports in near the room's middle; two guards flank either side. Grab some ammo off the crate nearby then use the button to the marine's left to cycle the airlock. Look to the right to see what those nefarious guys are up to. At the bottom, shoot the soldier ahead. Crush him, search for health and armor, and exit. Slaughter them then use the health station on the left and grab armor from the back right corner. 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