You have a very good sense of defining a soundscape and staying “in character” throughout the OST. Your harmonic language, especially in River Styx shines through and makes things really interesting! If I could offer one bit of critique, I would love to see you commit more to changes in the music. I can tell when you have new ideas coming up, and they’re great! Don’t be afraid to give them some spotlight; it’ll only make them that much more memorable.
Overall great sound, solid mixing, groovy, and flowing. Great job!