3.12%
Developer Rage
Find and kill a Serious Sam developer in versus multiplayer.
7.01%
Bright Island
Finish the Bright Island campaign in single player.
7.53%
Familiar Scenery
Find Bright Island's first secret level.
7.53%
Friendly Bright Island
Finish the Bright Island campaign in cooperative.
7.53%
Not Quite A Resort
Find Bright Island's second secret level.
8.57%
Sam I Am
Kill 100.001 enemies.
9.35%
Friendly Mine Trap
Kill 50 players with mines.
9.61%
Mine Trap
Kill 100 monsters with mines.
9.61%
Stop jumping!
Kill 5000 marsh-hoppers with the chainsaw.
9.87%
Newton's worst enemy
Mess with the gravity for a total of 60 minutes.
9.87%
Serious Killer
Kill 500 people.
9.87%
Guns are seriously useless
Finish 2 levels in The Second Encounter using only the knife in at least normal difficulty.