You'll find the Blue keycard on a body at the end of the area.Ĭontinuing down the catwalk you can open the blue door which will have the third Gore Nest. There should also be an AutoMap device on a catwalk while going back. You'll find a Chainsaw there, and also an Elite Guard through a ventilation shaft at the top of the crates. Prior to entering the door at the end of the hall that leads to the next Gore Nest, you'll find some crates on the right side. You'll also be able to get a Prototype guy collectible in the middle cart on the conveyor belt. In the next area you'll fight another Hell Knight, a Hell Razor, and some Imps.

In the next room you'll find a Data Log on a desk. Once you've finished it, you can head back to the foundry and you'll be able to fight another Hell Knight on the steps at the other side. You can get to it by going to the middle of it and then hopping to the side. You'll find a lever for a classic doom map of Nuclear Plant on the side of a long catwalk in the middle of the foundry. Head down the catwalk afterwards and turn left, and if you continue down until a door you can't enter you'll find an Argent Cell next to it. You'll fight a few more Imps and Possessed Soldiers with a ton of explosive barrels in the area. Continue going down the long corridor in the middle of the main area, which should be on the left side. While going back you'll be attacked by some Imps and a new enemy called a Hell Knight. There's a platform that you can jump onto which has a Vaultguy collectible. You'll also find some molten metal to the side of a catwalk here. Go down the path and just keep going straight, you'll eventually find several Imps/Possessed demons and a yellow keycard on a body. Once it's destroyed, head back the way you came to the main area. Destroy it and you'll face a ton of demons, including a new type called Hell Razors. You'll find one of 4 Gore Nests that we'll have to kill in this mission.

Hop down the broken walkway and check the doorway to the right, and you'll find an Elite Guard. Head back up and once you've reached the other side of the destroyed walkway, grab the arm from the corpse and use it to open the door from earlier. Check the wall to find a console that will show you whose fingerprints you need and follow it. Go through the next door and kill the Possessed in the hall, then go through the door on the right to find a panel on your left that requires some fingerprints.

Doom classic maps locations