Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Armed and dangerous	Purchase all pistols.
Armed to the teeth	Acquire all weapons in the game.
Can't touch this	Purchase all dash upgrades.
Chain chain chain	Dash twenty times before triggering the cooldown.
Defeat unspeakable horror	Unspeakable horror.
Fleet of foot	Purchase all movement speed upgrades.
Grenadier	Purchase all grenade upgrades.
I'll be back	Upgrade to two respawn cats.
Like a cat	Upgrade to nine respawn cats.
Lock 'n' load	Find a special weapon.
Meat sack	Defeat meat sack.
Nosraep, true form of the beast	Defeat nosraep, true form of the beast.
Rot belcher	Defeat rot belcher.
Serbian, mind of the beast	Defeat serbian, mind of the beast.
Sluggoth	Defeat sluggoth.
Spawning queen	Defeat spawning queen.
The remnants	Defeat the remnants.
Unthinkable horror	Defeat unthinkable horror.
Votolato, heart of the beast	Defeat votolato, heart of the beast.
Zinnerblilie, eye of the beast	Defeat zinnerblilie, eye of the beast.