Here is the full list of all 34 Mary Skelter: Nightmares trophies - there are 20 bronze, 7 silver, 6 gold and 1 platinum.
Raised all heroines' affection to max level.
Unlocked the Good Ending.
Cleared the Jail Tower.
Completed 80% of the Jail Creature Manual.
Unlocked the Bad Ending.
Cleared 50% of the work orders.
Cleared the Station Grounds area.
Defeated 6 Nightmares.
Hameln joined your party.
Gained the Blood ability Mary Reverser.
Cleared the Waterside area.
Unlocked all of the heroines' jobs.
Cleared the Dorm area.
Cleared the Downtown area.
Collected 100,000 Gold.
Activated a Blood Ability 100 times.
Protected the heroine 100 times.
Raised one heroine's affection to max level.
Cleared the Temple area.
Cleared 10 work orders.
Conducted Purge for the first time.
Cleared the Graveyard area.
Entered Blood Skelter mode for the first time.
Satisfied the Jail's Sleep.
Entered a hidden floor.
Matured a floor.
Satisfied the Jail's Libido.
Cleared the City Streets area.
Filled the Jail Creature Manual with 10 creatures.
Satisfied the Jail's Hunger.
Entered Massacre mode for the first time.
Obtained all Trophies!
Cleared the Underground Jail area.
Blood Devolution reached Level 80.