Cute character designs! These were very expressive for how small they are.
The physics are definitely super weighty, but I think that's kinda interesting. My second run through the level definitely went better than the first at least, once I got used to how I had to move. The emphasis really seems to be on quick horizontal movement and walljumps, and I think that's pretty cool.
Also, while it's Windows-only, it seems to run in WINE without trouble, so that's nice.