Amazing game, i love the art style and the general idea.
There were a couple issues while i was playing though, a minor one being that the sound didn't work till i accidentally turned it down using the sliding bar, which suddenly kick started the music. Another issue was that some times the regular attack wouldn't activate, which lead to a couple deaths.
other than that the sprite work was amazing and the gameplay felt good, though losing all progress at going to the start when you die, yet there being little to no issues with falling felt a bit odd.