I am determined to beat this one day as I did enjoy what I've been able to play so far, but I wanted to post a comment before voting ends. The first area, the ice area, is giving me quite a hard time. I'm not sure if it's just that I'm bad at the game or what, but I find those ice chuchu-like enemies to be very difficult to beat, I think mainly because the standard attack animation is a bit long and I can't really rapid-fire. I also found a bug where some doors shot up, preventing me from leaving a room, and even after beating all of the enemies that spawned I still couldn't leave and had to restart.
BUT other than those things, I actually quite like this entry! Atmosphere is on point, I like the distinct visuals of each area, and the music implementation is fantastic. Overall audio design is quite good, in fact. Like I said, I'm determined to keep at it so I can get to the other elemental areas, I'm just finding it overly difficult for just the starting section. Otherwise, great work!