Needs polishing! There are some nice ideas in this map (although some of them are clearly inspired by other peoples work: I saw some obvious red3 influences, and the building with the spriteroof reminded me heavily of Carthiefs work), but some easy-to-fix bugs take the map down a few notches.
For instance, the surrounding area looks buggy at several spots. I think you forgot to raise the ceiling at some points, which causes visual glitches. This is easy to fix, so please fix it. Also, make sure that the parralax ceiling has the same shading throughout the map.
The trippy part was a great surprise, it was easily my favourite part. Everything after that seemed like a collection of loose scenes that had nothing in common, but this also made sure that I kept playing. I would say the randomness kept the map interesting.
Overall: fun to play and there are some interesting ideas, but it needs to be polished! In the end the whole thing feels kinda rushed and there's nothing to tie all the loose scenes together - it almost feels like playing a cbp-map. Don't rush your releases, it takes the quality down.