This is very nice and quick game to play with just a standard deck of playing cards. Had fun playing it on a trip with some friends, and wanted to play again to try different heroes.
Some hero abilities may need tweaking (clarification/rebalance). E.g. heroes like reliable mentor and pluck merchant may need a buff (as I understood it after using their ability they cannot also attack, being at a disadvantage).
Other than that, its great! Even had ideas for expanding the game (e.g. What about God special abilities that make it more challenging!)