Title Theme Pastoral: I think you nailed your goal of a lonesome pastoral feeling. I particularly liked the ending with piano, horn, and strings all together. I think the piano entrance felt a bit sudden, but then after that when the other instruments enter the context makes more sense.
Foggy Black Market: The seedy smokiness of the back alley-esque market is conveyed well with the jazzy piano and drum kit. I like the addition of the trumpet and saxophones in the repeat after the interlude. The dreamy interlude flows very nicely from the main part of the track. Including dynamic soundtrack characteristics is a really clever inclusion in your OST since so many OSTs use them!
Moon Forest Base: This is a nice contrast to the other pieces. The bossa nova rhythm sets the scene for a relaxing home base very nicely. Based on the way you wrote your left hand piano accompaniment in the middle section, I wonder if you have training in writing or performing classical music?
Welcome to the OST comp jams! This is an impressive first submission! I like the variety of styles you used and I think each has a clear identity that would work really well in-game. Good work and thank you for sharing your music!