Beautiful artwork, start to finish! The drawing, sprites, BGs, all top notch. Music and SFX were all very nice too! The story was silly and cute, with enjoyable dialogue. The tutorial section was good, helped me get the controls down quickly. I don't remember it explaining items, but I figured that out on my own. There was a good variety of enemies, and the bunny/girl switching was a fun mechanic.
The platforming was solid overall. I got a little frustrated on all the spike pit areas, but managed to persevere and beat it! The boss was cool... I always enjoy big, imposing final enemies!
I ran into one control issue (i was on a keyboard) but the "ctrl" key for dash kept triggering shortcuts. At one point, dashing either closed or backed out of the page, and I lost my progress. Thankfully I wasn't very far. I was careful on the second playthrough. I'd definitely play this one with a controller, if I had one. (This was on Firefox on a PC)
Overall, a really stellar entry! Great work!