great map - takes me back to aa in my memory. I like the tunnel corridors and back area.
I just have a couple minor sugeestions -
1. Lower or clip the sub ramps so you dont have to jump up.
2. the walkway ends at the end of each bay and you cant go around to the next bay unless you hop up on the railing. I recomend you extend the walkway out to provide an additional path around, then block the last bay with some boxes.