The Wrath of the Lamb Add-on for The Binding of Isaac has 32 achievements.
100% the game
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Complete the final chapter with ???
Complete the final chapter with Maggy
Complete the final chapter with Samson
Complete Challenge 9
Complete Challenge 8
Complete Challenge 7
Complete Challenge 5
Complete Challenge 4
Complete Challenge 3
Complete Challenge 2
Complete the final chapter with Cain
Complete the final chapter with Eve
Kill moms heart with Samson
Kill Satan with Samson
Complete the final chapter with Judas
Complete the final chapter with Isaac
Complete Challenge 1
Complete Challenge 6
Kill mom but pass on 2 treasure room items