One Shot, Thrice The Score
Kill 3 enemies with one shot.
25 
The Things I've Seen
Shoot every type of enemy at least once.
20 
You Can Handle The Riot
Reach level 50 in endurance or co-op mode.
20 
Two Thumb Master
Finish the single player campaign.
20 
On A Gamer's Diet
Shoot 50 zombies, 50 robots, 50 pirates and 50 soldiers.
20 
Natural Born Gamer
Shoot 5000 enemies in total.
20 
I'll Show You Fits Of Rage
Shoot 20 enemies in 60 seconds.
15 
You're Like Some Kind Of Robot
Get 50 longshots.
15 
Been There, Shot That
Use every power-up at least once.
15 
Go Forth And Multiplay
Play an Xbox LIVE multiplayer match.
10 
Nice Beating You
Defeat the first boss in the pirate theme.
10 
One Meeellion Blocks
Destroy 1.000.000 blocks.
10