Super fun to play, super clean visual/audio design! Tuning on jump hight, game speed and resource management landed on a really good spot too. Great job on that one.
To give some useful construcive feedback: I felt a bit disapointed about how little my final score was celebrated, especially if I made a new personal best. If you're planning on doing a post-jam version, milestone goals to work towards would be a great addition. I really like the idea of blocks giving more points based on hight to reward risk-taking. A combo-system would be a great addition to the score maths imo.
I did feel like there is kind of a thematic disconnect between rabbit jumping around and "slashing"? Maybe I'm just overthinking it though, it's an arcade-style game after all.
As for the actual gameplay, the purple pickup might as well be an insta-kill. Making all boxes purple is almost impossible to recover from as far as I could tell. Apart from that its tuned very well and really isn't missing much polish.