The Collapse of Peace: The clangs with the echo, the low buzzy strings, and the choir singing in an indistinct language with lots of reverb set up great imagery for a wartorn scene. The percussion that enters gives the music momentum and turns it into a march-like drive. This is a great track to set up the expectations of what is to come.
The Gears of War: I love the LABS “rain” sound and how the tone hums throughout. Your use of growly bass lines feels like the rumble of large machinery slowly moving by. I think that your use of atypical percussion sounds also adds to the environmental feel of your track. The ending choral echoes with the ritardando give the music a melancholic inflection.
Cold Dark Hell: The initial bass pulse being out of time with the industrial percussion is really interesting and grabs my attention for this track. The major chords used contrast greatly with the sinister sound effects you use and give an interesting mix of emotions when listening to this song in the context of the story you wrote for it. It’s difficult to describe, but I like it!
The Crater Under Siege: This is really cool sound design. I have no idea what you used for these sounds, but I love the growl followed by the overtone sound as well as the typewriter effect in the clicky percussion. This would be a very ominous section of the game that would definitely put me on edge while playing.
The Valley Has Fallen: Mirroring the title of the track with the falling chord progression is very fine detailed touch that I appreciate.
Anthem Themes: Each of these gives character to the different clans and gives insight into who they are and what sorts of resources they have, even without reading your descriptions of them. This was a very cool idea!
Overall: Your world is emaculately crafted not only with your narrative and maps, but also in your music. You have music, but you also have soundscape that helps add depth and color to how we imagine the world and story you have created. This is a game idea that is fully fledged and ready to be produced. Excellent work and thank you for sharing!