Really nice mix of genres here with a lot of different instruments at play. Kudos on the orchestration throughout all three tracks - arranged really well, produced to perfection and doing a great job at bolstering the rest of the mix. The vocal passes toward the end of Discovery are a really nice touch, and I like how the style starts to change a little at that point.
The guitar driven support during the first half of Quantus DT83 is nicely done - it reminds me of a save room theme from a Resident Evil game at points - it just has that kind of quiet comfort to it, without being too 'safe'. The second half of the track definitely emphasizes the change of tone and direction. Great use of articulations here to set the stage for something new.
Dusk Town is gorgeous - a lot of really cool individual elements present here. I like how the intro features a lot of folk influence and trades off melodies around the accompaniment. The transition into the second section, which is much more tense, is seamless and really well done. Develops nicely throughout and joins back up with the style of the first section for the ending sequence.
All in all this is really good - great selection of tracks, varied moods and a lot of different instruments and styles at play. Produced well on top of it all, too. Great work! :)