I can not judge sync because to much lag for me.
0%-24%
The effects here are pretty good. The block design isn't good because it is one single kind of block but this might be a level that focuses on effects more than design. The "LDM" seems really useless as there isn't much detail in the level but except like the first 40%. The game play is only a little fun but the worse is at 2% were there is an invisible block on the saw which isn't fun. The way the background just disappeared in a flash doesn't look good. Should've slowly or rapidly fade it away instead.
Effects - 4.5/10
Game play - 3/10
25%-39%
This did just go completely out of theme but the effects look so good! I can see now this is just a level showing off the way you make effects instead of showing off your decoration skills. The game play is pretty fun. It was a little annoying but fun.
Effects - 8/10
Game play - 5.5/10
40%-55%
Ok, the different blocks you used kind of ruined the effect. Should have kept using the black blocks instead of different block. The wave at 52% is useless really. The effect looks alright because of the blocks you used. The game play was kind of fun.
Effects - 4/10
Game play - 4.5/10
56%-69%
It got a little..blank here. Like the effect seems a little off. Probably because of the white background. The game play was quite fun but the break time seemed useless. At 61% the slanted spikes look like you forgot to add block underneath of them. The rainbow blocks look weird when they overlap the black blocks. 67% ,the break time, is really blank ,could of had some effect there.
Effects - 1.5/10
Game play - 4/10
70%-100%
The effect of the block fading in is alright. Although it is really blank. I understand that it is an effect level but there is only two minor effects being used. Never use invisible portals unless your making an annoying demon. The prism would've been better if you made it slanted a little and add a little less opacity.
Effects - 1/10
Game play - 2/10
Overall, you're problem seems to be making really good effects for the whole level. Kind of looks rushed really. So try not to rush levels because then it makes it look really bad.
Moved to Decent Levels