Full list of all 60 Duke Nukem Forever achievements worth 1,205 gamerscore. It takes around 20-25 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 10 achievements worth 205 Gamerscore.
Carry the gold pistol through the whole SP campaign
Complete the SP campaign on Hard Difficulty
Complete the SP campaign on Insane Difficulty
Listen to all phone messages
Discover all Ego cap awards
Win air hockey with a score of 7-0 in the strip club
Find all 3 helmets in the SP campaign
Look at every page of a calendar
Eat 10 pieces of food during the SP campaign
Shoot down the blimp above the stadium
Watch the credits all the way through
Complete the SP campaign on Easy Difficulty
Complete the SP campaign on Normal Difficulty
Defeat the Energy Leech
Kill all the catfish in the underwater level
Defeat the Octaking
Drink beer while on steroids or vice versa in SP
Unlock the secret closet at the end of the Forkstop
Kill 6 aliens with the forklift
Kill 15 aliens with melee attacks while on steroids
Kill 15 frozen aliens
Execute 20 aliens
Defeat the Battlelord on the Hoover Dam
Kill 30 aliens with headshots
Kill 15 aliens with the monster truck
Use a Holoduke in SP
Foot stomp 12 aliens
Drink all of the beers in the strip club
Win a game of Alien Abortion in the strip club
Defeat the Alien Queen
Get hit by 10 Pregnator bombs
Get knocked down 10 times
Kill 250 aliens
Kill 10 aliens with Trip Mines
Kill 10 aliens with environmental explosives
Defeat the Battlelord in Las Vegas
Put a Trip Mine on a live alien
Kill 100 aliens
Shoot down 20 alien fighters
Blow up 5 enemy gunships or dropships
Kill 3 aliens at once
Kill 50 aliens
Kill 10 aliens with tossed objects
Take steroids in SP
Drink a beer in SP
Earn a 1,000,000 pinball score in SP
Knock out the talent at the talk show
Defeat the Cycloid
Doodle something on the whiteboard in SP
Find and steal a piece of poo
Beat The Doctor Who Cloned Me campaign on Hard Difficulty
Beat The Doctor Who Cloned Me campaign on Insane Difficulty
Beat The Doctor Who Cloned Me campaign on Easy Difficulty
Beat The Doctor Who Cloned Me campaign on Normal Difficulty
Discover all Ego cap rewards in The Doctor Who Cloned Me campaign
Kill 30 enemies with the moon rover
Kill 10 expanded enemies with melee attacks
Earn a 1,000,000 pinball score on the Scientits pinball machine
Finish Doctor Proton
Kill 3 enemies within 3 seconds with the Impregnader