(City of Gold) by me

92% because I cannot beat any level before I die everywhere where it's possible... I'm truly sad.

-Gameplay- [2/4]
I've never felt bigger split between frustration and joy at the same time. That timing and some transitions sometimes were killing me without an option of escape. I understand "City of gold" is the main theme but I hope your intentions weren't to make spikes almost unnoticable. Seriously, combination of spike and "light" with the same colour is not a good idea. Also invisible saw corridors were pretty annoying, especialy at the first ship part during gravity change. But there are good sides too. Move was made perfectly, some aggresive, some a little gentle and nothing too sudden. Cube parts were also great but too easy to make another way through. I found some bugs which weren't destryed gameplay, but still...

-Design- [0.8/2.5]
Gold is yellow, gold is shiny. Design is yellow, but shiny? No. However it's so repetitive and simple. It make it boring, if it not change from time to time. 3D's usage was a good idea, realisation of it is a little different. Ball's design is very similar to that one in Deadlocked. 

-Decorations- [1.5/2.5]
It's gold too. It was hard to say whether you used blending or just chnaged opacity. Decorations are made like design [(Ctrl + C) + (Ctrl + V)]. Except that bossfight part. That rotating effect was very amazing. + You used deco with limits. It's not overdecorated and not undecorated. Quite good job.

-Music Sync.- [0.8/1]
Maybe I didn't beat it, but I can say it was pretty interesting how you synced music with gameplay and some effects.

-Summary [5.1/10 Decent Level]

This demon can be fantastic, if you'll spent some more time updating it. Fix the bugs with transitions, change saw corridors on something more static and visible and if you want to use those saw so badly, then use them as an extra. Get rid of portal which teleports you to the mini ball part. It's useless. Use saws which can change their colours. It'll help you keep the theme up. If you're going to make an update which'll contain those tips, I'll more than happy to try to beat it.