Glacier Isle

Fun little game!
I agree with keyboardmash here,
and I've noticed a few pointers you could improve if you don't mind,
- camera
Looks like you've stuck to scripting everything yourself, but I would suggest at least looking at the assets>camera controls> mouselook script for pointers, it uses the quaternion class of functions to move, you could simply make right arrow increase Y angle and left arror decrease it, which would make camera movement keyboard based (like in WoW!) or use a mouse (like in skyrim)
- checkpoints
make a sound play or something when you reach a checkpoint, I was jumping up and down trying to figure out what it was before deciding it was a broken script then moving on, I only found out when I fell in the water!
- collision box,
use a capsule collider that includes the head as well because it's a bit strange when a platform cuts him in half!
- platform physics
you have to move with the platform in order to not fall off, which is very strange indeed.

Thank you for the suggestion, I will look into it.

The camera really needs work. I suggest using the mouse to look around and having the snowman always facing in the same direction as the camera.