Found a game-breaking bug. Somehow, this game state (there are 2 Wildfire tiles under the tower/gear/bow/box tile on the right) has completely bricked the game in the very last fight. It doesn't know what to do with the Wildfire triggers.
Edit to add: Discovered that the game auto-saves at the start of combat, so a quick refresh at least allowed me to continue and finish the run. Fun time, though arrows are really, REALLY powerful tiles. Like, I can see several absolutely absurdly strong combinations that really only work with arrows. Arrows can and will if you get more than 1 or 2 completely remove almost all need to use the Clear Board action.