Storm King is very menacing, I love the timbres you chose for this one, and the way it ebbs and flows in intensity throughout the piece.
Flamelurker feels like a great way to expand on that intensity, it almost feels like a march towards certain death. The glitchy stuttering really adds to the feeling of something being wrong and is a great way to crescendo the piece without adding even more aggressive instrumentation on top.
Maiden Astraea is pretty much the opposite - it's a really nice break from the chaos, and really beautiful without sacrificing the interesting texture palette you've chosen.
Penetrator feels threatening without feeling like it's retreading territory you already covered with the other pieces. I really like the way it links into the previous track by using the stuttering to work as a through line even though they're otherwise quite different.
Maiden in Black is a wonderful way to end off this cover. I love how droning and melancholic it is. This one really feels like something you could hear in Portal 2 (or FEZ near the end), it's fantastically ambient and inhuman.
Really great work! I absolutely loved everything you made here.