Use the indicated combination to open the corresponding cabinet or storage room.
In the Lost Missions campaign, before going down the stairs on the second floor with the pillar on each side to fight the final Boss, turn left, and go to the wall. There will be a cubed area of the wall you can go behind, where you will find the RAGE logo. Interact with it to open a secret room containing extra ammunition and armor. You will also get the "RAGE" achievement.
Complete the game on any difficulty to unlock the Nightmare difficulty. In this mode, your health will constantly decrease.
| Achievement | How to unlock
|
|---|
- 2 Deaths - 1 Gun (10 points)
| - Kill two enemies in the same room with a rocket in DOOM 3 Multiplayer.
|
| - Find the id logo secret room in DOOM 3.
|
| - Use Berserk to kill a player in DOOM 3 Multiplayer.
|
| - Defeat Cyberdemon boss in DOOM 3.
|
| - Blow up 50 barrels in the DOOM 3, RoE, or Lost Mission campaigns.
|
| - Keep a Sentry Bot alive to its destination in DOOM 3, RoE, or Lost Mission (except Mars City).
|
| - Complete a DOOM 3 Multiplayer match without dying.
|
- Cookie Stealer (15 points)
| - Defeat Guardian boss in DOOM 3.
|
| - Catch an enemy player in the Reactor of Frag Chamber in DOOM 3 Multiplayer.
|
- DOOMed Collector (15 points)
| - Collect every PDA in DOOM 3.
|
- DOOMed Marine (10 points)
| - Complete the DOOM 3 single player campaign on Marine.
|
- DOOMed Nightmare (20 points)
| - Complete the DOOM 3 single player campaign on Nightmare.
|
- DOOMed Recruit (5 points)
| - Complete the DOOM 3 single player campaign on Recruit.
|
- DOOMed Veteran (15 points)
| - Complete the DOOM 3 single player campaign on Veteran.
|
- Double the Fun! (10 points)
| - Kill 2 Imps with one shotgun blast in DOOM 3, RoE, or Lost Mission.
|
| - Defeat the Maledict boss in RoE.
|
- Evil Collector (10 points)
| - Collect every PDA in the RoE campaign.
|
| - Complete the RoE campaign on Marine.
|
- Evil Nightmare (20 points)
| - Complete the RoE campaign on Nightmare.
|
| - Complete the RoE campaign on Recruit.
|
| - Complete the RoE campaign on Veteran.
|
- Fists of Fury (10 points)
| - Use the Artifact with Berserk ability to punch out 20 enemies in RoE.
|
| - Defeat the Berserk Hunter in RoE.
|
| - Defeat the Helltime Hunter in RoE.
|
| - Open all storage lockers in DOOM 3.
|
- I Like to Watch (15 points)
| - Find all video logs in DOOM 3.
|
| - Score 25000 on Super Turbo Turkey Puncher 3 in DOOM 3 or RoE.
|
- Lost Collector (10 points)
| - Collect every PDA in the Lost Mission campaign.
|
| - Complete the Lost Mission campaign on Marine.
|
- Lost Nightmare (20 points)
| - Complete the Lost Mission campaign on Nightmare.
|
| - Complete the Lost Mission campaign on Recruit.
|
| - Complete the Lost Mission campaign on Veteran.
|
| - Kill 5 enemy players while using Invisibility in DOOM 3 Multiplayer.
|
- Not a Scratch (20 points)
| - Complete a level without taking any damage in DOOM 3, RoE, or Lost Mission (except Mars City).
|
| - Kill 20 enemies with projectiles launched from the Grabber in RoE.
|
| - Find the RAGE logo in the Lost Mission.
|
- Ready for Action! (10 points)
| - Get the BFG-9000 from Security Chief's office in DOOM 3.
|
| - Use the chainsaw to kill 20 enemies in DOOM 3.
|
| - Defeat the Invulnerability Hunter in RoE.
|
| - Use the Soul Cube to defeat 20 enemies in DOOM 3.
|
| - Complete the DOOM 3 single player campaign in 10 hours or less.
|
- Sticky Situation (15 points)
| - Defeat the Vagary boss in DOOM 3.
|
| - Kill an enemy player by jumping into a teleporter after them in DOOM 3 Multiplayer.
|
- That was Close! (15 points)
| - Kill an enemy with 1 health remaining in DOOM 3, RoE, or Lost Mission.
|
- To Be or Not to Be (5 points)
| - Kill the scientist trapped next to the Reactor Control Room in DOOM 3.
|
- Too Slow, Fool! (10 points)
| - Kill 5 enemies at once while in Hell Time in RoE.
|
| - Get 2 demons to fight each other in DOOM 3, RoE, or Lost Mission.
|
- Unarmed Badass (10 points)
| - Kill 20 enemies with the fists/melee hands in DOOM 3.
|
- You Laugh, It Works (5 points)
| - Find the bloody handiwork of Betruger (in Delta 4 Hallway) in DOOM 3.
|
- You're Not My Boss! (15 points)
| - Defeat Sabaoth boss in DOOM 3.
|
