Brilliantly fun. This game is beyond mindless and i love that. It's extremely difficult maybe a little harsh with the no checkpoints but unless it's impossible difficulty isn't a complaint. The boss fight did break, i think, the boss just went and hid in a corner when i thought seemingly endless waves of enemies, but that could be intended. The game has a very distinct identity and is very funny.
The punch ray size is too small though, i had many times where I would click on an enemy sprite and it woudn't hit their hit box.