Twenty-Five Grand
Obtain a personal score of 25,000.
25 
Protect All Humans
Lose no humans in the first 3 waves.
25 
Five Waves
Make it to the 5th wave.
20 
Run!
Survive the first 75 seconds without shooting, bombing, or teleporting.
20 
Baiter Bane
During an Xbox Live Co-op game, kill 5 baiters in any level without using any smart bombs.
20 
Competitive
Win 30 Xbox Live versus games.
15 
Nice Catch
Rescue a human with a mid-air catch.
15 
Getting Better
Make it to the 3rd wave.
15 
Fifteen Grand
Obtain a personal score of 15,000
15 
Mutant
Shoot 5 mutants in one game.
10 
One Wave
Make it to the 2nd wave without losing any humans.
10 
Cooperation
Achieve a score of 15,000 during an Xbox Live CO-OP game.
10