Here is the full list of all 90 Coin Crypt achievements.
Defeat EVERY enemy
Beat Loonie
Have your maximum HP exceed 30
Climb the mountain 10 times
Beat Frank
Beat Sacagawea
Beat the Lootmaster
Beat the Archbishop
Beat the Shadomega
Beat Ouguiya
Beat 3 Old Explorers
Beat a Corruptor
Beat Kaichin
Defeat 2 Prodigies
Beat the Tycoon
Beat Bullion
Collect all secrets
Get to the bottom of the mountain
Unlock ALL classes
Discover all coins
Defeat 3 Angels
Discover all enemies
Beat the Gold Idol
Beat the Sorceress
Beat all 3 secret bosses and finish a run
Enter the forge
Defeat 3 Swabbie Spirits
Defeat 2 Anubises
Find 50 Doubloons
Gain entry to Sea World
Beat the Queen
Get the Gods' reward
Earn $25,000 in one run
Beat 3 Grandmas
Donate $500 total to Rubo
Gain entry to Sky World
Unlock all classes
Use 10 wishing wells
Get 10 ghost blessings
Give 10 status effects to enemies
Find 5 secret chests in crypts
Defeat 3 Lost Kids
Beat 3 Cardinals
Beat 3 Piggy Banks
Donate $10,000 total to deities
Find 7 Chaos Chips
Earn $15,000 in a single run
Discover 30 types of enemies
Find 10 hidden chests
Beat the Ghost King
Donate $500 total to Ouguiya
Donate $500 total to Loonie
Donate $500 total to Frank
Donate $500 total to Bullion
Donate $500 total to Sacagawea
Donate $500 total to Kaichin
Attempt 50 runs
Discover 80 coins
Find 3 Cryptcoins
Beat 3 Undeads
Get to world 3 in the crypts
Beat 3 armors
Beat the Mega Ectoplasm
Unlock 9 classes
Get to world 3
Find 20 Bramble Pieces
Beat 3 Musicians
Beat 3 Rogues
Get to world 2
Enter the Crypts
Get to world 2 in the crypts
Beat 3 Ectoplasms
Clear the first level
Beat the game with 10 classes
Beat the forge 10 times
Beat the game with every class
Deal 200 or more damage in a single strike
Win a run without dealing any damage
Collect EVERY coin
Beat the game with EVERY class
Collect ALL secrets