Love the look and feel of this game. It's been put together really well! Lots of levels it seems to get through as well.
Would have liked things to ramp up a little quicker, especially for a Jam game. Get us to the more quirky stuff sooner.
Also it'd be nice to save last respawn place in playerprefs or something. I reloaded the game as the sound was degrading (think this is a webGL thing, possibly browser related, happens on a few games including mine), and It put me back at the start.
That said it's one of my favourites i've plated so far, and i've done a good few now. So great work! I could see this progressing into a fuller game easily.