I'm Not That Bad
Not unlocked yetAchieve Bronze in all challenges.
Carnage
Not unlocked yetComplete the story on "Easy" difficulty.
Zombie Nation
Not unlocked yetComplete 4th Millennium on story
Dino Crisis
Not unlocked yetComplete Mesozoic Era on story
Mr Robot
Not unlocked yetComplete 6th Millennium on story
Frozen
Not unlocked yetComplete 4th Century BC on story
Bored?
Not unlocked yetPlayed all modes
I'm Pretty Good
Not unlocked yetAchieve Silver in all challenges.
Bloody Carnage
Not unlocked yetComplete the story on "Normal" difficulty.
Slippery Devil
Not unlocked yetTake no damage for an entire level in the story mode.
Bring The Peace
Not unlocked yetShoot 250000 bullets.
Headmaster
Not unlocked yetGet 500 Headshots.
Mexican Wave
Not unlocked yetSurvive 25 waves in Arcade
Dead No Longer Walking
Not unlocked yetKill 1000 Zombies.
Boner
Not unlocked yetKill 1000 Skeleton Army.
Do Not Compute
Not unlocked yetKill 1000 Robots.
Shoot Her
Not unlocked yetKill 1000 Dinosaurs.
I'm the Dogs B
Not unlocked yetAchieve Gold in all challenges.
SSTORM
Not unlocked yetComplete the story on "Hard" difficulty.
Greedy
Not unlocked yetUnlock all the weapons.
Perky
Not unlocked yetUnlock all the perks.