Your art style is wicked and I love it.
Enemies have way too much health for the simplicity of this combat system (this is a common issue I've seen in this jam). Your character controller needs work: the jump is floaty and imprecise, the attack has too much wind up, etc.
Still, for 6 days, good on you. What you've got is a lot for just 6 days of work as a solo dev.