Track 1: This piano opening is beautifully cinematic, and an awesome start to your soundtrack. I am extremely excited to hear your use of modes-- it is clever musical ideas like these that add interest to any soundtrack. Great opening theme, definitely gives this game a sense of awe and wonder and has me excited to keep listening.
Track 2: this is a simple, beautiful menu theme,.
Track 3: I love this catchy theme! So far your music has been attentively written, and it all sounds great. I am glad that you aren't shying away from changing meter, modulation, and having plenty of consistent changes to the music. Better to have one minute of great, diverse music than 4 minutes of a repeating chord-line, it really keeps the track moving.
Track 4: another really well-done track, I enjoyed the accordion and the wide variety of instruments used here-- using a lot of instruments is an easy way to add diversity and prevent the timbres (no pun intended for this pirate-y track) from getting boring.
Track 5: At this point in your soundtrack, I haven't yet said "okay, I get the gist of this track, let me skip to the next..." You do a good enough job of keeping things very interesting that I have listened to each track fully. This one is no exception: definitely giving starry cave vibes.
Track 6: Wow, awesome usage of the Locrian mode here, this track goes so hard!!! That transition into the beat was awesome... absolutely killer boss battle music.
Track 7: Only because you're so good I feel like I can nitpick, the melody in this track was slightly hard to follow. It drifted without much direction or shape. Other than that, the track sounds really beautiful and makes a lovely conclusion to this amazing soundtrack.
From one composer to another, fantastic job. I am glad that you embraced modes: they really are a simple and effective way to add interest and character to any track. I hope you continue to write music, as you've got the gift of charming, lyrical melodies, music with plenty of character, and a knack for writing meaningful, awesome stories.