Really good job on the main mechanic of the game, it is really cool and it has potential. If I were to give you feedback I would tackle mainly the level design and trying to exploit this mechanic as much as possible. I found the sliding mechanic very fun and you could play with that by keeping the momentum of the character for example. I can imagine a level where you have to time jumps to throw ice blocks in front of you to keep forming a path of ice :D