First achievement and unmissable, players will be granted this achievement upon starting the game.

Missable. Players will have to drop their gun and walk up to an enemy, using the melee attack. Upon using the melee attack (same button as gun), players will be granted this achievement. Easiest way to get this is in the opening tutorial level, you can immediately use it on the first enemy as it has no gun and is no threat.

Missable. When you drop your gun to equip a new one, or to use melee attack, you will notice the gun flies. You'll have to line the gun up to a berserker and have it fling into him, immediately gaining you the achievement. Berserkers aren't found until level 6 and have red eyes, along with taking multiple shots to kill instead of a single blast.

Missable. Must kill every single minion and berserker in level 10 to obtain this achievement. Self explanatory.

Can not be missed. Players will be rewarded this upon finishing level 10. Do not have to have the TOTALLYHELLCAT achievement to continue.

Can't be missed, will gain achievement after beating the first boss.

Can't be missed, rewarded after completing all levels and beating the final boss.