[PTI] Permutation
Also the way the laser turned off was a really nice touch so thanks for making this 
Voted you a 5/5 you because this deserves it and I noticed this was in a collection so I will be sure to see the rest of your work after playing this one 
This guy did a great blind run of this map a while back when it was published on the Workshop so you should check it out.
Obvious Spoilers: http://www.youtube.com/watch?v=RdStp7k8QPc&list=PL7D2A0005D8B550F9&index=57
I decided to post this onto TWP as it has been my favourite creation so far and I am so glad people like it.
I am sure it cannot be perfect so please somebody try to break it and find me some bugs to get fixing 
mwatson, thanks for posting PA's video here for people to see. That guy really gives me the motivation to keep on mapping when he makes comments like those.