Great work!
I the composition is solid. Its at a point where I know how I might approach things differently, but where the decisions I might make wouldn't necessarily be "better" in all contexts.
I.e. I might opt for a little more emphasis on tension and release, but not all music needs to work like that.
Some of it also maybe sounds a little MIDI, but again, even that can fit video games better stylistically.
Great work, this is very solid. The mixing is also very nice too, its very gentle on ears.