Shoot 5 mutants in one game.
Make it to the 2nd wave without losing any humans.
Make it to the 3rd wave.
Survive the first 75 seconds without shooting, bombing, or teleporting.
Rescue a human with a mid-air catch.
Make it to the 5th wave.
Obtain a personal score of 25,000.
Lose no humans in the first 3 waves.
Achieve a score of 15,000 during an Xbox Live CO-OP game.
Win 30 Xbox Live versus games.
Obtain a personal score of 15,000
During an Xbox Live Co-op game, kill 5 baiters in any level without using any smart bombs.