Extermination
Not unlocked yetKill 50 aliens
Annihilation
Not unlocked yetKill 100 aliens
Nuclear Devastation
Not unlocked yetKill 250 aliens
Hippy-Stomper
Not unlocked yetFoot stomp 12 aliens
Judge, Jury, Executioner
Not unlocked yetExecute 20 aliens
Trapper
Not unlocked yetKill 10 aliens with Trip Mines
Freeze Well!
Not unlocked yetKill 15 frozen aliens
Road Rage
Not unlocked yetKill 15 aliens with the monster truck
Fork the Pork
Not unlocked yetKill 6 aliens with the forklift
Dead Useful
Not unlocked yetKill 10 aliens with environmental explosives
Tosser... in the Literal Sense
Not unlocked yetKill 10 aliens with tossed objects
Duke Angry, Duke Smash!
Not unlocked yetKill 15 aliens with melee attacks while on steroids
Noms
Not unlocked yetEat 10 pieces of food during the SP campaign
On the Noggin'
Not unlocked yetKill 30 aliens with headshots
Substance Abuser
Not unlocked yetDrink beer while on steroids or vice-versa in SP
Natural Disaster 3x
Not unlocked yetKill 3 aliens at once
Full Body Tourettes
Not unlocked yetGet knocked down 10 times
Turd Burglar
Not unlocked yetFind and steal a piece of poo
I Need a Towel
Not unlocked yetGet hit by 10 Pregnator bombs
Baron von Nukem
Not unlocked yetShoot down 20 alien fighters
I Need a Date
Not unlocked yetLook at every page of a calendar in SP
Sticky Bomb Like You!
Not unlocked yetPut a Trip Mine on a live alien
Big Guns, Big Ships
Not unlocked yetBlow up 5 enemy gunships or dropships
Air-Duke
Not unlocked yetWin air hockey with a score of 7-0 in the strip club