Full list of all 27 Kill It With Fire achievements. It takes around 5-6 hours to unlock all of the achievements in the base game on Windows.
The base game contains 24 achievements, and there is 1 DLC pack containing 3 achievements.
Execute Contingency Omega.
Kill every type of spider.
Find every flavor.
Kill a spider after being webbed.
Destroy the gas station.
Kill a Jumping Spider in mid-air.
Play a tune.
Find batteries.
Find every upgrade.
Find all equipment.
Find every tracker upgrade.
Face the music.
Burn the money in the safe.
Destroy EVERY dish.
Decimate the hedge maze.
Kill a spider by dropping an anvil on it.
Destroy the printer using the RPG.
Sink a putt.
Knock every letter off Kill It With Fire HQ
Transform a Spiderling hatched from a Queen into a Queen
Shoot a spider with the Revolver from a long distance.
Complete a mission while in Tiny Mode.
360 no-scope a spider with the Assault Rifle.
Kill an Exploding Spider with C4.
Betray a Spider Bro.
Unlock the shoe's true power.
Eliminate every blade of grass in the yard.