Serious Sam Classics: Revolution achievements

Find and kill a Serious Sam developer in versus multiplayer.

Finish the Bright Island campaign in single player.

Find Bright Island's second secret level.

Finish the Bright Island campaign in cooperative.

Find Bright Island's first secret level.

Kill 100.001 enemies.

Kill 50 players with mines.

Kill 5000 marsh-hoppers with the chainsaw.

Finish 2 levels in The Second Encounter using only the knife in at least normal difficulty.

Kill 500 people.

Kill 100 monsters with mines.

In singleplayer, beat the last level of The First Encounter or the last level in The Second Encounter in the "I am Ugh-Zan" difficulty.