(played for about 45mins, although I left to do something partway through, did all 10 levels)
Didn't find anything I'd call a bug
Particle effects and lighting all looks nice so if you wanted to polish anything I'd start with the player sprite, he seems a bit stiff and bland compared to the rest of it.
Might've been a bit of input lag, but might have kept me from stepping off a cliff now and then so not necessarily a bad thing if it's intentional
Found myself wishing I could hold the 'place ice' button while walking to keep placing it as I go
Im glad you had the quicksave/load button, it came in handy, also having the controls in top left was useful
good luck with your release!
(Oh, and they were good puzzles, definitely had to think)