Finished it; it's awesome. Very existential, with time-travel, multiple universes, and alien machinations to prevent the entropy of the universe. It's pretty heavy.
And, it ends on a really hopeful, though somber note.
Damn good. 9/10.
There is only one way of avoiding the war – that is the overthrow of this society. However, as we are too weak for this task, the war is inevitable. -L. Trotsky, 1939