Here is the full list of all 45 Neon White trophies - there are 34 bronze, 6 silver, 4 gold and 1 platinum.
Unlock all trophies
Complete Mission 1
Complete Mission 2
Complete Mission 3
Complete Mission 4
Complete Mission 5
Complete Mission 6
Complete Mission 7
Complete Mission 8
Complete Mission 9
Complete Mission 10
Complete Mission 11
Complete Mission 12
Defeat Green at the Clocktower before he reaches the top floor
Defeat Green at the Third Temple before he reaches the finale stage
Complete White's Heaven and Hell Rushes
Complete Red's Heaven and Hell Rushes
Complete Violet's Heaven and Hell Rushes
Complete Yellow's Heaven and Hell Rushes
Complete Mikey's Heaven and Hell Rushes
Earn an Ace medal on every level
Unlock all of White's memories
Complete your relationship with Red
Complete your relationship with Yellow
Complete your relationship with Violet
Complete your relationship with Mikey
Complete your relationship with Raz
Complete your relationship with Green
Write Green into the Book of Life
Write Green into the Book of Death
Collect all gifts
Find a Strange Coin
Stomp off the edge of a level
Redeem every Heavenly Delight Ticket
Get killed by a Tripwire
Deplete the Fists card
Die from a Mimic's bullet
Use the Book of Life card on a Mimic
Kill an enemy by parrying a bullet at them using the Katana card
Discovered Idiot Island
Earn 50% of total Ace medals
Collect 50% of the total gifts
Earn your first Ace medal
Redeem a Heavenly Delight Ticket
Give your first gift