Nice work! Really enjoyed the game. Obviously jams don't leave a lot of time to develop a meta so once I got the corners piercing, it was smooth sailing. Another comment was how the snowmen didn't feel like they attacked and I think it's because the projectiles moved fast enough so things just disappear. Have the bulbs shatter and the stronger ones get snowball residue would have been cool.
I also couldn't tell if the snowmen blocked each other, I certainly collected a lot of icicles. And giving the path a border would have been helpful, it had the edge and was colored slightly differently but it was still hard to see a lot of the time.
I "replayed" level 10 because I was enjoying the game until the fps dropped to a slide show after 7-ish (on an older laptop).