Good job ! I tried to write as I listen to try giving more detailed moment-by-moment impressions :
The Ever Ending Waterways :
I like the texture from the start, very well produced ! The piano part feels very delicate and the whole piece makes me think of a chill night scene with some melancholy
The Wheel that Never Stops:
Similar texture to the last piece, changed towards a less serene and more tense harmony and overall feel. A mysterious synth goes wild and suddenly slows down into a sort of drop. A new lead synth plays a more determined melody and a modulation gives some dramatic intensity to the last section with an unresolved ending that leaves me wondering what is going to happen next !
Small and Insignificant:
String synth sweeps and a piano playing harp figures creates a beautiful harmonic texture that then serves as the backdrop to a lonely flute staccato melody. A synth with a strong character joins with drums, until a dramatic moment where things become serious ! We shift to a military 2/2 metre and a low synth feels me with anticipation while the flute comes back to tell us that now it's ready to roll !
Palace of despair:
Extremely low strings strings set an ominous tone, with a piano melody that is oddly serene in comparison, but occasionally deranged by an unresolved accidental. Ostinato violin feels a bit weak, which could be meant to add to a sense of despair I don't get, or just be that this particular violin sample is a bit too weak to be alone like that.
Patrol of the Underdogs:
Ah, A battle theme :)
Intro follows the last track and now the orchestration works for me and then...
Boom ! we're fighting, marcato string ostinato and energetic drum-and-bass drums tells us it's not gonna be easy. But a synth comes tell us it's gonna be fun !
Then the instrumentation shifts completely to chiptune, with syncopated rythms and a melody that succeeds in keeping rythmic momentum and energy, until a more techno-inspired 4-on-the-floor comes back with the strings to really push us to our very edge against our enemy.
Overall :
The material is very solid and the orchestration / instrumentation work is really great. But your form tends to always build up and build up and just abruptly stop at the end, which can be fine, but seems to be your default. It's okay to build down you don't have to constantly build up.
Other than this very minor nitpicking I really enjoyed the soundtrack, Great Work !
Those synths fit soo well !