Full list of all 12 DOOM II: Hell on Earth achievements worth 200 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Xbox 360.
Get 100 frags in Deathmatch on Xbox LIVE
Complete any level in Single player
Complete any level on 'Nightmare' in Single player
Complete all levels on 'Ultra-Violence' or higher in Single player
Find a secret area of a level in Single player
Complete all levels in 'DOOM II: Hell on Earth' in Single player
Complete all levels in 'DOOM II: No Rest for the Living' in Single player
Complete any level with 100% kills, items, and secrets in Single player
Get 20 kills using the Chainsaw in a single level in Single player
Get 20 kills using the Berserk Powerup in a single level in Single player
Kill a CyberDemon using your fists in Single player
Find a BFG in Single player