Cute, won 1st try with the last hat, tried again and won with the fire hat, not sure what the two achievements other than win the game are.
Received two cheap hits thanks to enemies spawning on me, but not a real issue given the generous amount of health you are given.
2 players with friendly fire would be fun.

thank you for playing !!! (the other two achievements are for winning damageless and for winning with the first hat)

Nice game, maybe I could call this Binding of Goblin.

Mostly luck for damage-less, couldn't find a pattern in the enemies spawn locations.
Once you've figured out that the hit box of the magic sparks is taller than the player hit box, it's just a matter of placing you above or below enemies, activate the magic, and wait for enemies to enter the death zone.
For the boss, hug the left wall.

Small quality of life suggestion : restart the cart programmatically with extcmd("reset") rather than having the player do it manually at the end of the game.

thats crazy, omg!! well done, i honestly wasnt sure if it was even possible.

(and thank you for the suggestion!!)

Nice game, the music is so charming!