Game Achievements:

• Cannon Expert - Pierce at least 10 enemies with a single cannonball. (0 Gamerpoints)
• Co-op Beginner - Complete any level in co-op. (0 Gamerpoints)
• Co-op Hippy - Complete The Great Pyramid in co-op with blood option set to hippy. (0 Gamerpoints)
• Game Master - Complete the game. (0 Gamerpoints)
• I am invincible - Complete the game in single player without firing a single bullet or shell. (0 Gamerpoints)
• Look, it's a secret - Find at least 50 secrets in single player. (0 Gamerpoints)
• Metropolis King - Complete Metropolis level in single player on serious difficulty without loading. (0 Gamerpoints)
• Perfect Kill - Kill all enemies in Karnak in single player. (0 Gamerpoints)
• Serious Beginner - Complete any level in single player. (0 Gamerpoints)
• Serious Co-op - Complete a co-op game on serious difficulty and extra enemy strength on 400%. (0 Gamerpoints)
• Serious Run - Complete the game in single player by beating estimated time on each level. (0 Gamerpoints)
• Serious Sam - Complete the game in single player on serious difficulty. (0 Gamerpoints)