Pretty fun little guy. Decently polished and nice to fling yourself around. I think it's sad having to wait so long between upgrades. especially at the beginning. But perhaps I'm now spoiled by the survivors formula where you get to choose powerups every time they appear.
I think like others have said its quite repetitive. I blame lack of variety for that.
I got to wave 50 before just stopping because it felt impossible to lose at that point. But I was bored since like like 25 easily.
Also I think the game is unnecessarily confusing initially. While it's nice to include a tutorial, I don't think it's reasonable to expect people to actually play it, especially in a jam environment when there's so much to play and bouncing off of games is so easy. Like personally I'm not going to read a single thing you write until I'm already invested, so the game needs to stand on it's own imo.
Realistically the friction could've been reduced a lot just by labeling the bars at the top of the screen so I wasn't guessing what they meant and what I was supposed to be doing. Honestly if I had died before figuring it out I probably would've just bounced off of it and moved on, giving it a bit lower of a rating.
Anyway, not trying to be rude but that's my honest feedback of the flow.
Overall it's good stuff, but I hope in the future you guys can keep things interesting for longer or at least keep game times short enough that I don't personally quit instead of losing or beating it etc.