[ti]harder[/ti]Fracture

First Impressions: This is a very calming level. I'm normally not a fan of a monochromatic song, but the song matches the shades of gray you chose for your decoration.

0-21%
The gameplay here is very relaxing, fitting to the song. The The moving block structure in the ship structure was a bit sudden and killed me XD. I kind of wish that more elements were moving, especially in the ship section, to add more difficulty (you requested 7 stars but this feels like 3-4 star difficulty imo) and variety to the gameplay. The sync is okay, lacking a bit in the cube.
Gameplay: 7.5/10
Sync: 2/5

Design wise, it's a bit empty. Your custom background is very pleasing to the eye, but I personally feel it should cover more of the screen. The miniature block structures you did in the cube are very fitting to the minimalistic style you have in this level. A few of your shadows have an uneven gradient, but it's not too bad. A note on shadows: make them all face the same direction. It helps support a truer 3D landscape and gives a feeling of light when there is none. The block design on the ships are also very simple, but I don't criticize this as I usually do, as it's the style of the level. A few things to be desired: more obstacles (spikes) in the ship section, more background deco (if you do take this section, make sure the decorations don't clash with the custom background), and perhaps more textures on your blocks (nothing too fancy; the glowing objects should do fine. Look at Hinds' decoration for ideas).
Design: 4/10

21-46%
The gameplay in the wave segment of this section is where most of this level's difficulty comes from. Specifically, the double speed jitter click feels really out of place with the calm atmosphere you had in the beginning of the level. Granted, the song accelerates here so the speed should as well, but try to make it easier for the common player. The transition to the ball is a bit awkward because of the invisible spikes; I would use blocks or something similar instead. The sync varies from being good and bad: the ball transition is weird because the song stutters a bit, the cube lead up and teleportation matches the beat well, and the wave matches the song intensity in general.
Gameplay: 6/10
Sync: 3/5

Again, this level is too empty. There should be something in the background other than the custom background, especially in the ball segment and cube buildup. A few tiles in the ball section are overlapped, probably a mistake made in copy-pasting. Along with my comment above on shadows, make sure the shadows start in the same section for each similar block structure (there is a set of tiles where the shadows start at the top rather than the side). I really like how the empty space in the block structures in the wave segment bring out the custom background. The ball section as well; the shadows and the custom background don't clash, probably as a result from using gray. A final note that is more important than all my other comments: make sure that the player can't see the top a block structure. This is a problem resulting from changing heights; you can see as you go down the cube segment part of a wave block structure. This is a big no-no. Build up until you're sure that no matter what timing the player does they can't see it, or add a joke (a lenny face, a sassy question, or anything similar is appropriate).
Design: 1/10 (empty space more harsh here than other sections)

46-End
The gameplay is probably the least enjoyable here. A lot of invisible spikes make free movement not possible, which is fine, but because they're invisible the player gets annoyed for having a bit of fun jumping here and there. This remains even through the dedications. There's also an empty section at 84. You should add ways to die faster in case the player changes gravity, which should be visible due to the lack of deco. The sync is also lacking here; it matches the general movement of the song, but there are no satisfying jumps which I can give a high rating to.
Gameplay: 2/10
Sync: 1/5

This whole section feels a bit like the first. The same problems I mentioned above apply here. Another comment on shadows: make the blocks with shadows touch the ground. It looks strange and unnatural otherwise. I would add more block structures with the objects you made invisible.
Design: 1/10

Total:
Gameplay: 15.5/30
Design: 6/30
Sync: 6/15
Grand Total: 27.5/75
Rating: Needs Improvement

Final Comments: There are good ways to do minimalistic design, and there are bad ways as well. You started off okay, but the level became worse as it continued other than the wave part. I would also reconsider the difficulty; the only part that feels seven stars is the wave section. Make sure to keep your difficulty consistent and to rely on other decoration besides custom backgrounds. Fancier block structures also help improve your design as well.