Sorry it took longer than I hoped, but here are my thoughts!! (I gave thoughts overall and for each specific piece, sorry if you weren't looking for that kind of detail...)
OVERALL COMMENTS: Great compositions and orchestrations, and very well produced. Sometimes your writing is a little busy and may benefit from some reductive editing, but technically speaking everything you wrote worked well together. In my opinion – some of your instruments (your percussion especially) could go to a whole new level if you brought in one or two live musicians for a session to record some of the stuff on an acoustic instrument. Hans Zimmer does this all the time, as do other great composers and producers. The mingling of live and computer music helps to bring some humanity to the crazy-good sounds a DAW can produce. A small group of live performers may set you back a couple hundred dollars, but would make the soundtrack stand out compared to other soundtracks. Otherwise this is a really good soundtrack and you should be pleased with how it turned out!
The Horizon: Sweet, love the electric guitar sounds especially. Everything here really sets the stage for a game in this style. The rhythmic guitar at 1:25 ish could maybe have been introduced more subtly, and then built up in a crescendo. The orchestra at 1:40 was also kind of unexpected, almost abrupt. Nice transition into 2:15 ish, this is an interesting section. 2:30 is definitely really working well, the parts speak well with each other and create an interesting overall picture/texture/idea. Good sound production at the end.
Airships: Good use of ostinatos to compliment the melodic material. I’d consider bringing them down, either reducing the instrumentation or giving them a quieter dynamic. Seems a little cluttered, is all, with all the sustained sounds and with everybody playing in such a similar range. Never be afraid to listen for reductive editing opportunities. Your countermelodies are super strong and add a lot to the piece.
Dogfight: Whoa, cool. I LOVE the Celtic sounds (flute, guitars) in this one. Again, good use of ostinatos. Really good electric guitar melody, I feel like I have to search for it through all the other sounds happening, though. 1:25, REALLY good break and transition into the next section. I don’t think I’d have the snare drum or high percussion sounds accompany the horns, they didn’t feel well-matched to me. Great melodic ideas and supporting ostinatos. 3:20, the percussion exit was abrupt, maybe a cymbal roll into that release would help me feel less like you pulled the rug out from under me?
The Brigands: Is your eighth note subdivision consistent? Some parts are definitely swing eighths and some are straight eighths, which sounds weird to me when they happen at the same time. A very “saucy” track, I like it, and the harmonic tension definitely helps.
Bounty Hunters: I’m losing a sense of your melodic and counter melodic writing style in here. Not a bad piece, but next to the others it doesn’t seem to have as much personality.
A Million’s Pirates: The first couple times I listened to this something struck me as off about the timing of the articulate, high-frequency percussion lines – like they weren’t evenly subdivided. The most recent listen I gave, I didn’t hear the same thing so maybe I’m crazy! Live performers would be epic for that part (maybe on un-tuned toms or field drums, or on their rims, or something similar). I think there’s a Celtic flute somewhere in here, but it’s getting lost for me.
Bomb Run (& Fire at Will): I think with these pieces you have a chance to change styles a bit. Think of this as the “bridge” of the game, you don’t have to adhere so much to what you’ve created in the “verses and choruses”, you can break a little bit more and just focus maybe on a new idea in the same vein. Fire at Will started to do that (especially cool rhythm idea @ 1:35 ish), with some new-ish rhythmic, melodic, and harmonic ideas. At this point, my ear wants something that breaks stylistically from all the previous pieces. They’re good pieces, but I think you missed an opportunity to make these pieces something special.
Surrounded: Nice intro, a unique character. Again, when I listened the articulate, high-frequency percussion seemed to be unevenly subdivided. This time I think I may understand the rhythm you’re using, but it still sounds a little off. Listen around 1:31/1:37/1:43/1:49 for examples, though there are more. The legato melodies in this one are a nice break from some of the other melodic styles. Sometimes the intervals felt weird to me, but it’s hard to put my finger on why sorry! Neat sound effects. Change of style at 3:05 is welcome and refreshing. Cool keyboard and oboe stuff at 3:20 ish, the build in this area is quite nice. Any reason this piece is so much longer than most of the rest? There are a couple areas where the momentum seemed to slow down, maybe reworking some of them out of the piece may have helped (or maybe not – who knows). Good legato melody at 4:45 ish.
What We Fight For: I like the guitar parts I hear in the background at the beginning (0-0:15). Nice use of choir, reminds me of one of the earlier pieces in a good way. Good chord progression here, really fits the mood, especially with the clear descending line it creates. The chromatic downward motion in the cello/basses around 1:30 is fun J Hey, the guitar stuff has returned (2:35 ish), cool! A good piece overall.
Our Finest Hour: SWEET rhythmic stuff in this – the interlocking here is especially good. With the melodic material, be careful to listen for velocity and plan how you want to build tension and relax it. The horn melody didn’t peak on the higher note like I expected it to, while the trumpets may have peaked too much (felt kind of forced, not quite human). Otherwise, all I can say is wow – for me you really nailed this one.
We Fly Once More: Again I hear swing and straight eighth notes at the same time. It’s more subtle here and somehow seems to work better in this case than the other time(s) I heard it. Great balance for the drums, I wouldn’t mind hearing more of the cymbals and crashes when they’re emphasizing melodic content.