Shattered a lot of frozen enemies
Being on time to things
Telefragged an opponent
Squished several opponents with moving blocks
Killed an opponent after dying
Dodged a lot of boomerangs
Regularly killed yourself with the explosive boomerang
One of your "teammates" killed you
Killed opponents while unarmed
Killed many opponents with the telekinesis powerup
Mastered the disguise powerup
Killed a lot of enemies with fire
Spent a lot of time hiding in the bushes