Steam achievements:
ACHIEVEMENT – HOW TO UNLOCK
Abel – Complete the final chapter with Cain
Blood Rights – Kill Satan with Samson
Bloody Lust – Kill mom’s heart with Samson
Dad’s Key – ???
Daddy’s Love – ???
Guppy’s Hairball – ???
Guppys Tail – Complete Challenge 4
Mega Fetus – Complete Challenge 6
Platinum God! – 100% the game
Samson – Kill mom but pass 2 treasure room items
Super SMB Fan – Complete Challenge 7
The Bloody Penny – Complete the final chapter with Samson
The Burnt Penny – Complete Challenge 3
The Candle – Complete Challenge 1
The Counterfeit Coin – Complete Challenge 9
The Cross – Complete the final chapter with Maggie
The Curved Horn – Complete the final chapter with Judas
The D20 – Complete the final chapter with Isaac
The Fish Head – Complete Challenge 5
The Lucky Toe – Complete Challenge 2
The Polaroid – ???
The Rainbow Baby – Complete the final chapter with ???
The Sacrificial Knife – Complete the final chapter with Eve
The Spider Butt – Complete Challenge 8
in PC Cheats