Hey, thanks for playing and all the constructive feedbacks, I appreciate it, really - it's rare to see someone put this much effort to point out what can be improved from my game.
1. & 3. Yeah... I was actually planning to add another type of enemy, a snowman that can shoot snowballs, but due to time constraint of the game jam I couldn't. The majority of my game jam was spent trying to learn and adapt with this new engine.
And yeeeaaaaah I really should've made the boss easier. Forgot the rule of thumb of game design: if the difficulty feels "just right" for you as the developer, it's probably way too hard.
2. Ah, this. I actually kind of felt the same way when testing, so I made the background a little bit darker. I didn't know how else I could make the character stand out a bit more though... Perhaps I should've darkened the blizzard and the snow blocks a bit darker too and made the background slightly more orange-y pretending this were evening or something - this way the characters and enemies would stand out more.
4. I guess this can be improved by giving a hint whenever she's about to teleport. By the way her new location can actually be deduced by the direction of the blizzard, but I really should've somehow pass this information to the player... Or maybe make the arena smaller?
5. I guess I really did get a lot of complaints about the sound design yeah. The sounds were indeed the last thing I put into the game and were made hastily - some of them were even directly taken from freesound. Honestly, I don't know how to or what tools I can use to make SFX... I also should've made some BGMs but again... time constraint.
Again, thank you very much for the constructive feedbacks. It really helps me.