Heyo ~
I thought all the game mechanics were really solid and satisfying. I really liked the upgrade mechanic where you had to run around like a chicken with its head cut off for a while.
I don't want to beat a dead horse but the pacing was pretty brutal, between gold accumulation and enemy difficulty ramping everything just took a bit too long.
That said I'm really impressed with the quality and polish that exists on this game and am super impressed. Well done!