Great game!
Early level have good design, we have a tutorial that implement the basis, they are implemented with
progression, we can have sometimes two way to complete the level with a bonus if we take the hard path and
we have the sensation that it was made to speed run.
At the end for the game design, sometime we can be confusing, for example, there's this little platform that we might think it can be reached but we need to roll and jump to the other side, the chaining barrel was not super convincing.
I think the game wants to be dynamic, the music needs to be more energetic, i have the feeling i will relax, maybe you put this music because "nothing can go wrong" with a panda.
Like it's a platformer, buffer jump is missing (or maybe it's wanted), try not to center vertically the camera on the character, put it a little above the character and the camera, for more comfort, can go a bit ahead where the player goes (with smoothness), you can inspire from the virtual camera of unity, they have great features.
It lacks of innovation, the little thing that tells you you're not playing a classic platformer, we have the sensation of "déjà vue".
You focused on the content and use all the mechanics you made, it's super great.
I had a lot of fun of retrying those level and when you want to retry the entire game, it's a good sign in general.
It's well balanced, not too punitive, the levels are short.
Nothing to say for the design / animations, they are neat.
The physics overall is great, we have the control on the character, it's a pleasure to jump / move around.
It reminds me of the end is nigh or super meat boy.
I hope you had fun for doing it! Congratz!