Hi, Great map.
I see you are not around here anymore, but I will post it anyway.
First off all, I will not even try to guess how much work you put in to this map. I only started with Hammer. That being said, this is my feedback:
- I really liked the part
with the 2 cubes placed on a wall projector beam so they simultaneously hit the 2 buttons. The fact that you can stage something and then with one action to have multiple consequences is something original and not even in portal 1 and 2 single campaign you don't see that(not that I can remember). You were more creative than the designers of Portal with that one
- I don't like post-apocalyptic chambers but this one were OK.
- The difficulty level is not
intermediate but
advanced how others has stated here. You mentioned that is harder than Portal 2 Single player campaign but according to Valve scale your map is still
Intermediate. It is an Official valve scale? Please tell me about it

. On my scale if is harder than SPC is
Advanced difficulty.
- Chamber 3: very brain squashing. The phase with the laser was very hard to think of even the solution was relatively simple.
I don't like the fact that you can direct the laser through the glass and activate the mechanism; I think is a glitch. I know you like your maps to have multiple solutions but this feels more like cheating.
That is for now. I will come back with screen-shots and a video to illustrate more clearly.
PS. I have read your "tom-chiu_patent-pending_design-introspection" and I can see that you put a lot of thinking in this project
Congrats for winning the competition man!