Superb soundtrack!
I love the wide range of samples and electronic instruments... you're able to explore so many unique timbres and colors that add to the spacey feel. It also adds a lot of contrast: the second track especially is a lovely contrast to the first one.
The entire soundtrack has a wonderful cohesiveness, sounding serene and pure with hints of grittiness and brokenness, perhaps a reference to the game as you described it. I like the parts where the grittiness takes center stage, such as Creature of the Ruins.