Nice ambient music! Sets a good tone. Your acceleration feels way too slow, but I think this may actually be a game feel problem rather than a gameplay one. If you ramp up the roll animation speed as character speed increases, then maybe include dust particles at higher speeds, I think this would probably work. Would require playtesting to confirm.
Really like how your level sections are revealed and the graphical variety. Smart decision to keep things simple so you could still do this much variety.
Watch your level metrics for jumping. Those early platforms are right at the max allowed jump height so it always feels like I'm just barely going to make it, which isn't usually the feeling you want players to have at the start of your game. You can definitely go for this for more difficult / optional sections or for emotional effect, but probably not this early. Problem is compounded with the slow speed ramp, because you need momentum before you can actually make a jump like this.
I seriously love how much you justified the platforms visually. It's not something you see in a lot of 2D games (except maybe Ori).
Your platform layouts feel very intentional, which I appreciate. Clean, intentional layouts are often overlooked by people who don't have a lot of experience in level design. You're also being very smart about introducing obstacles one at a time, letting me get used to them, then mixing them together for interesting sequences. (Another thing that is usually overlooked in game jams.) Some of the sections could probably use more playtesting to dial in the difficulty, though.
Really well done!