I can't pretend I've beaten your game (fuck that lake of acid!), but my god its an absolute looker. You / your artists got mad talent. Especially if you made all those assets truly over the last week. I also wanna voice my appreciation for having an actual narrative, which tends to be the first thing to get the axe in a lot of these gamejam projects I feel.
I think there is a lot of potential here, with some sound effects, some better feedback on hits and some less punishing platforming, I totally see myself playing this "properly".
Oh, and I'm in love with your character design.