Color Me Impressed
Complete a mission on Normal without dying, failing, restarting, or continuing campaign
Silver
Droppin Bombs
Call in the airstrike to defeat the Command Center
Bronze
Hummer
Kill 15 enemies on the HMV turret
Silver
Kaboom
Destroy the gas station
Bronze
Long Range
Kill 20 enemies with a sniper rifle
Bronze
One Hundo
Unlock all the unlockables
Gold
Pool and Dive
Survive the pool attack
Bronze
Private
Complete the game on Easy Difficulty
Bronze
Rocketman
Kill 2 aliens with one Rocket
Silver
Seen Your Video
Watch an unlocked video
Bronze
Sergeant Major
Complete the game on Hard Difficulty
Silver
Staff Sergeant
Complete the game on Normal Difficulty
Bronze