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