Going with the Wind
Not unlocked yetKill the boss and complete the South America episode.
Once Upon a Time in Babylon
Not unlocked yetKill the boss and complete the Persia episode.
Million Funerals and No Wedding
Not unlocked yetKill the boss and complete the Medieval episode.
Guns are seriously useless
Not unlocked yetFinish 2 levels in The Second Encounter using only the knife in at least normal difficulty.
Who needs kills, anyway?
Not unlocked yetKill less than 8 enemies on the first level of The Second Encounter in at least normal difficulty.
That all you got?
Not unlocked yetFinish the first level of The Second Encounter taking no damage in at least normal difficulty.
Jumping is overrated
Not unlocked yetFinish the first level of The Second Encounter without jumping in at least normal difficulty.
Impossible
Not unlocked yetThis achievement is impossible to get.
Mine Trap
Not unlocked yetKill 100 monsters with mines.
Friendly Mine Trap
Not unlocked yetKill 50 players with mines.
Plasma King
Not unlocked yetFind a secret Plasmathrower in The Second Encounter.
Secret Detonator
Not unlocked yetFind a secret Minelayer in The Second Encounter.
I am Ugh-Zan
Not unlocked yetIn singleplayer, beat the last level of The First Encounter or the last level in The Second Encounter in the "I am Ugh-Zan" difficulty.
Christmas 2014
Not unlocked yetGet the gold medal on the Christmas 2014 survival level.
Familiar Scenery
Not unlocked yetFind Bright Island's first secret level.
Not Quite A Resort
Not unlocked yetFind Bright Island's second secret level.
Bright Island
Not unlocked yetFinish the Bright Island campaign in single player.
Friendly Bright Island
Not unlocked yetFinish the Bright Island campaign in cooperative.