Flying Saucer
Make a model plane that's only a wing and made of metal and fly it into space with your pet dressed appropriately
6/6/2010
9:24:45 AM
Ultra Rare 1.6%
Above And Beyond
Complete a song with an average individual multiplier above 4x
6/4/2010
8:50:23 AM
Rare 38.0%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
5/29/2010
6:54:59 AM
Rare 15.2%
Invisible Predator
Complete one predator challenge by using only Silent Takedowns
5/11/2010
5:31:13 PM
Ultra Rare 4.0%
Flawless Freeflow Fighter
Complete one combat challenge without taking damage
5/9/2010
8:16:23 AM
Very Rare 8.3%
