Serious Sam HD: The First Encounter

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