Game seems to crash whenever you die :(
I dig the aesthetic a lot, the limited color palette and the retro feel is very nice! I also really looove the diagonal slash mechanic. It's really simple yet really fun, dual purpose, and it just flows, it's the perfect move.
The skull enemies were pretty good, they provided constant pressure and reminded me a bit of classic castlevania enemies. Shame they were the only enemy around though. I also kept running into the explosions like an idiot, I guess my natural instinct is that the explosion is safe because I just killed them. Once I started slicing them up with the diagonal slash though it stopped happening 😎
The music was reeeally repetitive, I think extending the loop and adding a B section would go a long way. It's also sad the boss didn't have his own music, it makes it hard to even tell he is a boss without that separation in mood.
It's cool though, I hope you polish it up after the jam! Also wait by Scratch do you mean this was made IN Scratch or from scratch? Cos either way that's impressive!