Complete the Game on Medium Difficulty.
Complete level 1-1 of the game.
Destroy 25 buildings during one game.
Easy "Survivalist" and "Killing Spree" achievements
Select the Area 51 Challenge. Start by killing everything in sight. Wait for the big metal robot to appear from the right. Do not destroy it. It does not kill you. As soon as it enters the screen, stand directly under it and start shooting in the opposite direction. You will kill everything that appears from the left side and the enemies jumping over the robot with ease. Keep this up for about twenty minutes to unlock both achievements at the same time.
Complete the Game on Hard Difficulty.
First of all start on the final level of the game and start with the second controller and make the bosses health low, when it is press start with the first controll then finish him off, that way you make the second controller do all the work until near death then jump in the first controller and beat him, then you will unlock 30g Achievements.
Head bite 50 enemies witout touching the ground or firing.
Eat 50 KGB Agenst with the Yeti.
Complete the Game on Easy Difficulty.
Kill 1000 enemies during one game.
Unlock all of the 31 hats that are in the game.
Defeat the final boss without using a continue.
Surive any challenge mode for 20 minutes.
Reach 5000 Km in Super Sovjet Missile Master.
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