This is an incomplete list of all classes currently available in the game.
Adventurer
The first class playable with no unlock required. Completely average stats.
Monkey
Always uses every held coin, but casts slow.
Professor
Professor can instantly change the arm during the battle. If it's always on hand will be other coins. But coins do not stack, you can not increase the effect of the coins and the battle take longer. He also gets more coins from the chests as a thief. He have 10 hp.
Useless: monocle, Grip glove, messenger bag
Archer
He has 1 hp at the beginning of the game. He quickly cast, and damage from coins increased by 30%. Healing coins are useless
Witch
She casts each coin twice, but loses one in the process.
Assassin
Damage is boosted, but healing is reduced.
Bard
Bigger hands, but healing and damage are weaker.
Hermit
Gets more loot, but coins aren't worth anything.