For a single-level game, this game out really well.

I know that you struggled with getting the physics and handling right, and I think you came pretty close to nailing it. The movement feel is very good, and you've chosen a very cute Tux sprite!

I found myself wishing that I couldn't pass the springs unless I was sliding - having to slide past certain obstacles and low tiles could make for some interesting gameplay that works in conjunction with the specificity of movement mechanics here.

On the leftmost side of the level, it would be nice if the camera could position to allow the player to be further away from the edge of the screen. Positioning and aligning jumps feels a bit awkward when it's so easy for the target to be offscreen when hopping between the sides of that narrow climb.

I also feel like the level here is specifically a good showcase of the kind of movement mechanics you've been working on, and that's nice to see.

If you end up continuing to work on this game, I'd love to play a larger version!