Good job, I liked the movement and the dash generally. I will say, the dash is pretty floaty when you use it to go up in the air, and spamming upward-diagonal dashes to move around seems to maybe be the best way; I just skipped most enemies like that haha
I see you've gotten a lot of great, actionable feedback from others already. I didn't dig too much, but also don't wanna repeat too much yet again haha. I didn't see any mention of the boss you implemented, and I think the animations and art are awesome but the fight itself could use some tweaking. The boss runs very slowly, but it's still quite hard to beat because it seems to have a lot of health (cannot tell due to the web build issue you mentioned in the game page). Also, the animations are maybe a bit confusing, oftentimes I would get the boss locked into his attack animation one way, jump around him, but then he is hitting me while I'm behind him. Since I couldn't see his health and I felt like I had hit him quite a few times, I ended up giving up on that section actually, I hope I didn't miss too much of the game
Overall it's a good start with some potential for improvement, great job on your first ever game jam submission!