Enter a New World: I'd love to know about the 'dynamic' part of this track. How would it change dynamically in-game? Otherwise, it's a solid opening track. I do find the repeating chords to be a little grating after a while--something like a buildup section, with different chords to the main section, can help. You could write a longer loop with more chords, add a B section, etc. and it can add some depth.
Portal to a Hidden World: this is another piece that would have benefitted from a shift away from repetitive chords, though the piano loop is super effective and driving.
Lyra in the Hidden City: I like this folksy guitar instrument--lute?--that you used here. The choir is a bit soft, don't be afraid to bump it up! Gorgeous flute chords though, I like the dissonance. And 10/8 is a fun meter to use!
Boss First Battle: solid boss battle music.
Boss Second Battle: I like this hoe-down in hell vibe a lot. It's a bit goofier, almost to remind you of the whole 'you're a cat' thing... lol
Enter a New World (Post-Destruction): ooh, perhaps this is the 'dynamic' aspect I was curious about before. Next time, don't be afraid to talk more about your process! I'd love to know more about the story behind these tracks. You've got a nice variety of songs here, and some exposition would help link them together into a full, connected piece.
A Tale for the Eons: this is giving final battle energy. Love the drums, though I agree with Jofes that they feel a bit muted dynamically. I have to be honest, there's a section in this one that makes me wanna shake ass in a tavern. I hope you're proud of yourself!
Stealth Mode: loving the guitar in this one--might be my favorite track! The mysterious flute melody is fun. Marimba countermelody is also enjoyable. This one also feels like it could be the track for some kind of cool country song.
This is a significant body of work for one week, well done and keep writing!