Thank you for your comment.
I had a lot of experience from the previous LD, but somehow this time I did not have as much time, didn't feel as good and also was disappointed with the theme, so for some reason I started with the graphics, even though I knew I shouldn't. So you're right, it really did take a lot longer than it should have, and in the end I almost didn't have time for coding basic gameplay.
The idea of the game is that two real, actual snowmen are playing the game on top of a real phone screen. That's why they look a bit weird, but understand that you are looking at the game at an angle, and the snowmen are standing on top of the phone itself; they are not displayed on the phone's screen. The snowballs should appear and disappear near the snowmen's hands, so it should look pretty realistic if you see the perspective. I rushed the gameplay part though, so not everything might look as good. Sorry about that.
I realised the playable area is a bit too small, but I couldn't do anything about it since I had already made most of the graphics. I tried to scale the game relatively to the browser's size, so it might look a bit worse if you have a small screen.
I know that fast pressing the up key can help win the game, but that was the last thing I had time for to fix. So take it as a small challenge to win the game without rapid pressing :)
I'm not experienced in making games, so I didn't really feel that shooting games can be unbalanced. But I'll take this into account and will probably make something new for the next LD. I will also ask my friends to join me next time. Thanks for your advice!