Achievements:ACHIEVEMENT – HOW TO UNLOCKDOOMed Recruit (5 points) – Complete the DOOM 3 single player campaign on Recruit.DOOMed Marine (10 points) – Complete the DOOM 3 single player campaign on Marine.DOOMed Veteran (15 points) – Complete the DOOM 3 single player campaign on Veteran.DOOMed Nightmare (20 points) – Complete the DOOM 3 single player campaign on Nightmare.DOOMed Collector (15 points) – Collect every PDA in DOOM 3.I Like to Watch (15 points) – Find all video logs in DOOM 3.That was Close! (15 points) – Kill an enemy with 1 health remaining in DOOM 3, RoE, or Lost Mission.Goody Finder (15 points) – Open all storage lockers in DOOM 3.Unarmed Badass (10 points) – Kill 20 enemies with the fists/melee hands in DOOM 3.To Be or Not to Be (5 points) – Kill the scientist trapped next to the Reactor Control Room in DOOM 3.Double the Fun! (10 points) – Kill 2 Imps with one shotgun blast in DOOM 3, RoE, or Lost Mission.Killing time (5 points) – Score 25000 on Super Turbo Turkey Puncher 3 in DOOM 3 or RoE.Boomtastic (10 points) – Blow up 50 barrels in the DOOM 3, RoE, or Lost Mission campaigns.Ready for Action! (10 points) – Get the BFG-9000 from Security Chief