Great map!
However, the following things need corrections, imho:
0:14 - yeah, the orange barriers, seems floating
0:33 - on left side: the helix barriers, they got underground, literally
on right side: the fence, noticeable slight height difference
0:38 - obvious things, the helix barriers placement
0:49 - on right side: slight noticeable bad positioning of helix barrier
0:51 - the idea of blockade is good, but the object used decision is bad
0:52 - sorry but, horrible placement of the barriers. i think unnecessary tho
0:58 ~ 1:00 - ....better to remove all those placed barriers, fences, walls
1:12 - i think, the arrows on left aren't necessary
1:18 - those cars are too many, i think 2 cars are just enough. 1 police sedan and 1 police suv is my suggestions.