Let's review this fully,
Nathan!
Level definitely has solid design with many interesting concepts
Gameplay is mostly fun, however some parts were pretty much cancer... ._. I'll review this part by part
Cube + Ship part (0:11 - 0:19) - The part has awesome design with lots of great deco and it syncs nicely with the music as well. Gameplay is a bit fun but there are some annoying parts like the unpredictable moves at 0:16 - 0:18 for the sawblades and the very sudden gravity portal at 0:17 which clearly the player should've got more time to react to. Otherwise after some memorization/attempts it's fun.
Ball + Cube part (0:19 - 0:26) - Nice design here as well, deco is good. Music sync is pretty nice and it's original as mentioned above. Gameplay is a bit confusing but it's mostly fun except the orbs at 0:23 doesn't really make sense the first attempts and is a bit confusing.
Ship + Robot part (0:26 - 0:33) - Robot part is very nice, but the ship part needs more deco (perhaps a custom-BG) and even though after some attempts the gameplay is very fun, those moving sawblades are annoying in the start and the player should have got some hints for where to fly when they appear. Transition at 0:33 is also incomplete, the foreground need more black blocks under it so it isn't just flying in the air.
Wave + Cube (before the drop) (0:33 - 0:42) - Nice buildup part to the drop. BG flashes at the wave part doesn't sync at all and felt completely out of place, and the wave part also should've had a custom-BG in the background or just a bit more deco in the background (it just looks a bit empty with that kind of BG). Gameplay is alright, but PLEASE make the speed portal visible as the player has no clue about it and it is pretty important for the gameplay as well. Block usage at wave part is awesome though
The tiny cube part was a bit annoying. Design was alright, and it is pretty cool, but the green orb is hard to see and the gravity portal shouldn't be invisible 'cause the player thinks it's supposed to jump which isn't the case since the portal saves it. Design is original
Several parts (0:42 - 0:50) - Awesome! The part varies gamemode and gravity portals often and the gameplay in general is very exciting and interesting. Custom BG is nice and you make it fade out nicely (which some players clearly should learn to do
) I think the blue orb is necessary, but I guess it doesn't matter since the level can have some fakes since it's an insane/harder level
Wave part (0:50 - 0:58) - OH BOY, this part is friggin AMAZIN'
It's SO original and the coin placement here was just GENIUS!
Design is definitely awesome, gameplay was annoying 'cause it was really tight and felt a bit ridiculous, but honestly that's my only complaint
Robot + Dual part (0:58 - 1:11) - Not much to say about the robot part honestly. Gameplay was fine, deco was nice, you changed lots of colors and it didn't felt too boring. Not the best part, but in no way underdecorated and still awesome
Dual part was very fun, 3D was great and design was solid. Awesome!
Ball part (1:10 - 1:20) - The part is pretty original, definitely not underdecorated, syncs very good to the music, but gameplay is pretty much pure memorization and it's hard to react here 'cause you don't really get much time. AFTER the memorization this part is really fun though ;3;) //
Ship part (1:20 - 1:27) - Design is nice and you do put warnings for where to go, but they're not easy to understand at all and the part in general is just a big mess of moving blocks and surprisingly hard to understand. Please reduce the amount of moving blocks since this part is WAYYY harder than the other parts and really difficult and buggy. It's cool to look at though, but playing this is just awful ;3;
UFO part (1:27 - 1:35) - Nice part all in all with nice design and good gameplay. I didn't like that some of the clouds went inside the blocks and it felt a bit messy. Otherwise okay part
Wave + Robot part (1:35 - end) - Gameplay is very boring as it's almost straight wave straight forward all the time and the segments are basically just copied over and over but moving up and down each time. Deco is also copied and the part in general is a bit too empty. Part is a bit fun I guess, but the gameplay as mentioned could've been more exciting to play. Nice ending! Very calm and fits to the song.
Gameplay: 7.5/10 - Gameplay was very fun, just some minor things here and there.
Music Sync: 8.7/10 - Very nice music sync most of the time! Some BG flashes didn't really sync and sometimes there were no sync at all.
Originality: 9/10 - Definitely original.
Design: 9.5/10 - Solid design with great deco, definitely feature-worthy.
Overall Score: 8.6/10 - With some adjustments this level is amazing! Definitely feature-worthy
FEATURE-WORTHY
Will review this later, but can't really promise a super detailed review simply because there isn't that much to criticize! 
Gameplay is mostly fun, however some parts were pretty much cancer... ._. I'll review this part by part 
) I think the blue orb is necessary, but I guess it doesn't matter since the level can have some fakes since it's an insane/harder level 
