I find that there are some good ideas behind it. The only thing that is difficult to guess is where the ice block will be placed. There would need to be a system for figuring out when I release the ice block, where exactly it will go. To explain further, something similar to Sutte Hakkun
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I had a couple of ideas for the ice block but i scrapped them for lack of time, i concidered the objective being to deliver the ice block to the end of the level while protecting it, or even a defense type of game where you defend a huge ice block against a wave of enemies, if you noticed the ice block even slowly heals you over time when your near it.
but yeah i didnt have enough free time to make the game mechanics go together and make the game more enjoyable, so i just made a small test level and uploaded whatever i had.