Beat an opponent while they still have 90% health and you have 10% or less health remaining

Hit someone with the old lady Level Interaction

Spill 1,000 pints of blood

Win 1 complete Klassic King of the hill match

Give Respect points in a King of the hill match

Defeat 4 enemies with the same explosion (all explosive items and weapons apply)

Get three dolphins to follow the boat

Revive 10 Allies in Multiplayer

Complete 5 matches in Multiplayer

Complete all trials on Moderate (difficulty) in Multiplayer

Complete the game in crushing mode

Reach level 5 in any faction

Jump 30 times in 1 match