Is there a pity system for Vault keys? Because I've cleared 18 floors and still no Vault Keys. Got a decent amount of Chests though.
Edit: 27 floors now. Do you have to be past a certain floor to unlock them?
Bugs: Paladin's shield ability doesn't seem to activate unless he takes damage. Which makes him not very useful at keeping the tank alive...
Start floor selection keeps resetting if you die