I'll be honest with you.
I feel bad for you, taking part in that piece of shit collab.
Seriously, that Orange Box collab was the worst fucking collab i've ever seen in my life. Just about everything that can go wrong with a collab, happened there. The only reason that it is over 3.00 is because of all the Portal and Team Fortress fanboys. It was so bad, I couldn't even write a review (i don't do that often, anyway).
I am a cynic, which seperates me from the dumb crowd. Yes I actually watched through all the flashes, with lots of pain, and near the end this piece of gold finally appeared (i saw it in that trailer ...).
I gotta say, the art style is great and the joke about the whole silence of Gordon Freeman was good. Too bad you didn't create something much longer. It would have destroyed that whole collab thing. I actually wonder if I would ever create something Half-Life related in the next time ... nahh ... probably not. It still makes me wonder how few the amount of HL flashes is anyway.
(This review ends here, before I end up writing too much shit)