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