Very nice map, well built and suprisingly creative. Really liked the whole "control room" idea. Also laughed seeing people getting fried trying to ride the big laser thingy down into the big room.
Probably my only complaint was the vents. Some of them break and some don't, so I sometimes would try to get one to open just to find out, after being shotgunned from behind, that it was a breakable. And really, if I could choose, I would want all of them to be rotating doors (cuz those are just plain cool

)
But other than that it is a very balanced map (in my opinion) and the only real improvement I can see is mabye one other secret type room (referencing the portals as the first)
Great job man, good luck on future projects