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