Here is the full list of all 66 ATTACK OF THE KILLER FURRIES achievements.
Defeat 100 Shooty Bunnies.
Defeat 100 Shooty Cats.
...
Finish mission 4.
Defeat 100 Stabby Bears.
Defeat 100 Bomby Bunnies.
Defeat 100 Bomby Cats.
Defeat 100 Shooty Bears.
Finish mission 3.
Defeat 100 Bomby Bears.
Finish mission 2.
Finish mission 1.
YAY YOU STARTET THE GAME!
Defeat 100 Punchy Bears.
Defeat 100 Punchy Bunnies.
Defeat 100 Stabby Bunnies.
Defeat 100 Stabby Cats.
Defeat 50 Bomby Bunnies.
Defeat 50 Bomby Cats.
Defeat 100 Punchy Cats.
Defeat 50 Bomby Bears.
Defeat 50 Shooty Bunnies.
Defeat 50 Shooty Cats.
Defeat 50 Shooty Bears.
Defeat 50 Stabby Bears.
Defeat 50 Stabby Bunnies.
Defeat 50 Stabby Cats.
Defeat 20 Bomby Bunnies.
Defeat 50 Punchy Bears.
Defeat 20 Bomby Cats.
Defeat 20 Shooty Cats.
Defeat 50 Punchy Bunnies.
Defeat 50 Punchy Cats.
Defeat 20 Stabby Bears.
Defeat 20 Bomby Bears.
Defeat 20 Shooty Bears.
Defeat 20 Shooty Bunnies.
Defeat 20 Stabby Bunnies.
Defeat 10 Stabby Bears.
Defeat 20 Stabby Cats.
Defeat 10 Shooty Cats.
Defeat 20 Punchy Bears.
Defeat 20 Punchy Bunnies.
Defeat 10 Bomby Bears.
Defeat 5 Bomby Bunnies.
Defeat 10 Bomby Bunnies.
Defeat 10 Bomby Cats.
Defeat 5 Shooty Bears.
Defeat 10 Shooty Bears.
Defeat 10 Shooty Bunnies.
Defeat 5 Shooty Cats.
Defeat 20 Punchy Cats.
Defeat 5 Shooty Bunnies.
Defeat 5 Bomby Bears.
Defeat 10 Stabby Bunnies.
Defeat 10 Stabby Cats.
Defeat 10 Punchy Bunnies.
Defeat 5 Bomby Cats.
Defeat 5 Stabby Bears.
Defeat 10 Punchy Cats.
Defeat 10 Punchy Bears.
Defeat 5 Punchy Bunnies.
Defeat 5 Stabby Bunnies.
Defeat 5 Stabby Cats.
Defeat 5 Punchy Cats.
Defeat 5 Punchy Bears.