Doom 3 Walkthrough - Monorail

Doom 3 Walkthrough Screenshot 1. In the opening cutscene, you see Betruger transform a soldier into a new foe - the commando zombie.

Doom 3 Walkthrough Screenshot 2. To your right is health and ammo. Read Harding's PDA for some background.

Doom 3 Walkthrough Screenshot 3. Step onto the train.

Doom 3 Walkthrough Screenshot 4. Use this console and the train embarks.

Doom 3 Walkthrough Screenshot 5. Take some time to enjoy the view.

Doom 3 Walkthrough Screenshot 6. You discover another passenger on board. Talk to Ryan for some background.

Doom 3 Walkthrough Screenshot 7. Your destination nears as you round this last bend.

Doom 3 Walkthrough Screenshot 8. The train finally comes to a rest and your objectives are updated.

Doom 3 Walkthrough Screenshot 9. Step off the train and descend one of these ladders at either end of the train.

Doom 3 Walkthrough Screenshot 10. Below you'll find a medkit, an armor vest and clips.

Doom 3 Walkthrough Screenshot 11. Return above and find a medkit and a machine gun here. Ready your chainsaw before opening the door ahead.

Doom 3 Walkthrough Screenshot 12. Yowza! This variety of commando zombie has a whip for an arm and is exceptionally aggressive. Here I'm throwing a grenade his way but I found the chainsaw to be a better choice.

Doom 3 Walkthrough Screenshot 13. Your reception here is less-than welcoming. A Z-Sector is right behind the commando, and more are here to the right. Don't descend these stairs just yet.

Doom 3 Walkthrough Screenshot 14. This medkit can be found to the left.

Doom 3 Walkthrough Screenshot 15. Continue to the overlook on the left.

Doom 3 Walkthrough Screenshot 16. A pair of Z-Sectors are around the corner.

Doom 3 Walkthrough Screenshot 17. This commando attacks from behind.

Doom 3 Walkthrough Screenshot 18. And then another attacks from the front. Whew!

Doom 3 Walkthrough Screenshot 19. If you backtrack to the train area for supplies, you'll be attacked by Trites.

Doom 3 Walkthrough Screenshot 20. Descend these stairs you bypassed a moment ago. Grab Gary Ross' PDA to update your security clearance and learn the junction 5, site 2 airlock code 826. Clips are to the right of the boxes.

Doom 3 Walkthrough Screenshot 21. Search farther ahead and to the right to find this medkit and armor.

Doom 3 Walkthrough Screenshot 22. Continue through this large open area to battle a Z-Sector and spawn more Imps. Find a medkit and armor here. An armor vest is on the nearby shelves.

Doom 3 Walkthrough Screenshot 23. Climb the stairs to this second overlook and two Imps spawn. Quickly toss a grenade at each.

Doom 3 Walkthrough Screenshot 24. Another Imp and this commando spawn. Before ascending those stairs ahead search beneath for a medkit and armor.

Doom 3 Walkthrough Screenshot 25. Another commando charges at you from the door ahead. Take him out with your chaingun then continue into the room beyond.

Doom 3 Walkthrough Screenshot 26. Heal at the station on the left and read Charles Hollies' PDA to learn the code 142 for the storage cabinet in the back, which holds rockets, shells and armor. Unlock the airlock with the terminal ahead using the code 826.

Doom 3 Walkthrough Screenshot 27. Return to the train, battling Trites along the way.

Doom 3 Walkthrough Screenshot 28. Inside you'll find the train empty - not a good sign for Mr. Ryan. Activate this panel to send the train on its way again. After a short journey (you do not return outside) the train crashes.

Doom 3 Walkthrough Screenshot 29. A brief cutscene introduces you to your new surroundings. Climb that ladder ahead.

Doom 3 Walkthrough Screenshot 30. Immediately ready your chaingun for this charging commando. A medkit is at the far end of the walkway.

Doom 3 Walkthrough Screenshot 31. To the right is this door. Ready your machine as you enter -- Trites await.

Doom 3 Walkthrough Screenshot 32. Through another door you'll spot this commando running away. Don't be in such a hurry to chase him that you miss the cells and armor down the ladder to the right.

Doom 3 Walkthrough Screenshot 33. Unholster your chaingun before opening this Delta Labs door. Inside is this commando, plus a zombie and an Imp. After defeating this initial wave, two more commandos spawn.

Doom 3 Walkthrough Screenshot 34. Grab the medkit before readying your chaingun and opening the door seen on the right -- to find another commando.

Doom 3 Walkthrough Screenshot 35. You'll find two Z-Sectors in here -- the one that I'm firing on plus another on the stairs to the right. Ascend the stairs to the glass office upper-right.

Doom 3 Walkthrough Screenshot 36. Grab the medkit on the left. Karl Cullen's PDA on the right updates your security clearance and reveals the storage cabinet code for two cabinets - 364.

Doom 3 Walkthrough Screenshot 37. Betruger's disembodied voice commands, "Destroy him!" Imps spawn front and rear. Farther along the walkway another commando attacks.

Doom 3 Walkthrough Screenshot 38. You'll come to this security checkpoint, defended by a commando and a fat zombie. Defeat them then rush quickly through the broken window of the office ahead.

Doom 3 Walkthrough Screenshot 39. Karl Cullen's PDA gives you access to disable the automated turret at this security station, but you should wait until the turret rips through the spawning hellforces. This is most entertaining.

Doom 3 Walkthrough Screenshot 40. This neighboring room holds the two cabinets opened with code 364. Inside you'll find armor and ammo. Karl Kullen's PDA also grants you access to unlock the door on the left.

Doom 3 Walkthrough Screenshot 41. Pass through the deactivated security checkpoint to the transfer bay door ahead.

Doom 3 Walkthrough Screenshot 42. Activate the panel to load Delta Labs Sector 1.