Here is the full list of all 18 Kill It With Fire VR achievements.
Get the secret ending
Knock all of the letters off KIWF HQ
Find every battery
Burn the money in the safe
Transform a Spiderling hatched from a Queen into a Queen
Fire the RPG at the printer
Destroy EVERY dish
Find every Tracker Upgrade
Find all Equipment
Find every upgrade
Beat the game
Get the golf ball in the hole
Kill every type of spider
Find every Flavor
Kill three spiders with a single throw
Kill a spider while Webbed
Destroy the gas station
Smack the piano