I really enjoyed this. It's a beautiful mixture of skillful and frustrating (may as well have called it Super Ice Boy haha).
The art is adorable. I was a little bit confused to why sometimes I could climb walls, and sometimes I couldn't (I realised after some trial and error this was bound to how cold I was). This mechanic could be used in some awesome ways. :)
I gave myself a pat on the back for finding all of the fountains, and my only advice after finishing it would be to maybe tone down the slipperiness just a fraction, because I think the auto-jumping off walls is a great mechanic in its own right :D
Keep up the great work!