Here is the full list of all 50 Deaths Hangover achievements.
Defeat the Boiler boss!
Free this soul at the Furnace!
Defeat the Chambers boss!
Free this soul in the Halls!
Free this soul in the Aquaduct!
Free this soul in the catacombs!
Free this soul at the Arena!
Defeat the Church boss!
Free this soul in the Monestary!
Free this soul in the dungeon!
Free this soul in the s**tway!
Free this soul at the Gallery!
Defeat the Arena boss!
Defeat the S**tway boss!
Free this soul in the Church!
Defeat the Gallery boss!
Defeat the Armoury boss!
Free this soul in the Armoury!
Defeat the Halls boss!
Defeat the Aquaduct boss!
Defeat the Monestary boss!
Defeat the Catacombs boss!
Defeat the dungeon boss!