Pretty fun once I figured out what is going on. Well polished too.
At first my instinct was to spam click the mouse button, but that would have lead to whatever the equivalent of carpal tunnel is in my mouse finger lol. I assume the design intent is to hold the mouse down, and only click when you need to counter the enemy attacks?
Also hard a hard time with the bosses till I decided to go all in on +size for a run and noticed that the attack hitbox is not restricted to be within the circle and its actually a upward rectangle. beat Green jelly boss, the 3 snakes, and some wizard man with 4 jellies zapping him.
I was told I unlocked a character (Taylor) but when I went to the character select screen I didnt see any new characters unlocked. Closing and booting the game back up fixed it though. Character seems a lot weaker than starting character.
Fun game! Good luck with the game, see potential in it.