Rambo
Spent a lot of time hiding in the bushes
Trash Compactor
Squishing several opponents with moving blocks
Master of Disguise
Mastered the disguise powerup
Vengeful Ghost
Killed an opponent after dying
Artful Dodger
Dodged a lot of boomerangs
Short Fuse
Regularly killed yourself with the explosive boomerang
Firestarter
Killed a lot of enemies with fire
Ice Breaker
Shattered a lot of frozen enemies
Who Needs Weapons?
Killed opponents while unarmed
Telekinetic Killer
Killed many opponents with the telekinesis powerup
Took One For The Team
One of your "teammates" killed you
Teleport Assassin
Telefragged an opponent
Punctuality
Being on time to things