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