Hey there! Thanks so much for playing, and all the great feedback. You're spot on about the hit boxes, both moving and attacking. Those are on the top of my list for a post-jam reworking.
I agree on the ziplines, they're functional currently, but don't feel great to use. I'll have to try and rework those. The wind does also need another look... you can actually cruise right through it with the right combo of moves, but I doubt may players will have the interest or patience to figure it out... so as it currently stands, it'll just feel like an annoying roadblock.
I think I will probably add the brief invulnerability as well. I found the multi-death thing kind of funny, and it didn't really get in the way too much, so I left it in. But that probably wasn't a good choice haha. (At least one player in the jam comments saw the humor in it, so I feel slightly validated.)
Thanks again for taking the time to share your feedback, it's big help! I'll be doing an update (with a "secret" stage 7&8) sometime this fall/winter, and I'll definitely be doing other tweaks, updates and polish too. Hoping for Devtober, but my work schedule is crunched so I'm not going to commit just yet.