Serious Sam HD: TFE Achievements

Co-op Hippie
Complete The Great Pyramid in co-op with blood option set to hippie.
10
Co-op Beginner
Complete any level in co-op.
5
Look, It's a Secret
Find at least 50 secrets in single player.
30
Perfect Kill
Kill all enemies in Karnak in single player.
10
Cannon Expert
Pierce at least 10 enemies with a single cannonball.
5
Metropolis King
Complete Metropolis level in single player on serious difficulty without loading.
20
Serious Run
Complete the game in single player by beating estimated time on each level.
15
I am Invincible
Complete the game in single player without firing a single bullet or shell.
10
Serious Sam
Complete the game in single player on serious difficulty.
30
Game Master
Complete the game.
20
Serious Beginner
Complete any level in single player.
10
Serious Co-op
Complete a co-op game on serious difficulty and extra enemy strength on 400%.
35