Here is the full list of all 37 RAD achievements.
Participate in a Daily Challenge
Upgrade Shermie's Shop
Upgrade Shermie's Shop to the max!
Become a Platinum member
Become a Desert Chrome member
Pop a chicken with your snake head
Eject 100 tapes from an ATM
Heal, Burn and Heal some more using fruit
Defeat the Colossus
Do someone a solid
Complete Cathode Raider Tasks
Complete Transfigured Tasks
Complete Vestigial Tasks
Conceive a serpent baby
Discover a Mutation Combo
Fully upgrade the town statue
Annihilate 5 enemies at once
Completed the game De-Made style
Unlock 25% of the Tome of the Ancients
Unlock 50% of the Tome of the Ancients
Unlock 75% of the Tome of the Ancients
Unlock 100% of the Tome of the Ancients
Get a Kill Streak of 10 or more
Get a Survivor Streak of 10 or more
Shamefully fall to your death while fighting the Colossus
Unlock all styles
Unlock all weapons
Unlock all Quirks
Receive a tasty beverage from the Mender altar
Receive a cash payout from the Mender altar
Receive disapproval from the Mender altar
Steal a key from a shop using Suck Face
Help Billy farm a plant
Help Billy complete his garden
Load your body up with the bummer mutation trifecta
Capitalize on your bodaciousness
Stay aloft for 10 seconds