Game Achievements:

• Adult Alien - Complete Game on Medium Difficulty. (15 Gamerpoints)
• Alien in Training - Complete Level 1-1 of the game. (5 Gamerpoints)
• City Destroyer - Destroy 25 buildings during one game. (10 Gamerpoints)
• Expert Alien - Complete the Game on Hard Difficulty. (20 Gamerpoints)
• Head Chomper - Head bite 50 enemies without touching the ground or firing. (20 Gamerpoints)
• Hungry Yeti - Eat 50 KGB Agents with the Yeti. (10 Gamerpoints)
• Juvenile Alien - Complete the Game on Easy Difficulty. (10 Gamerpoints)
• Killing Spree - Kill 1000 enemies during one game. (15 Gamerpoints)
• Mad Hatter - Unlock all of the 31 hats that are in the game. (20 Gamerpoints)
• Perfect Fight - Defeat the Final Boss without using a continue. (30 Gamerpoints)
• Survivalist - Survive any challenge mode for 20 minutes. (25 Gamerpoints)
• WMD - Reach 5000 Km in Super Soviet Missile Mastar. (20 Gamerpoints)