i got too much money as the merchant i think and bugged the money! at the shop it said i had -15 dollars.
also, i noticed something. if you drink a potion, like a -4 damage from melee enemies until your next melee kill, all enemies on the board will take the hp penalty visibly. However, the penalty won't visibly go away until you've collected the experience.
more simply: drink -4 potion. two skeletons go from 3hp to 0 hp. you click one skeleton. free kill. the other skeleton still shows as 0 hp now, even though if you click him you'll die. it only visually updates when you click the killed body for the xp. maybe make the potions visually update upon killing rather than collecting?
sorry for all the bug report spam. i enjoy the game.