The Magnussen devices were also really finicky -- half the time they'd bounce off instead of sticking. The last walker deflected three of them before I finally got one to stick, and then Magnussen had the nerve to say his devices worked flawlessly, in the cutscene. Ha!
But anyway, after that I decided to try out the fifth part of the Orange Box, Team Fortress 2. And if I thought the walker stage was aggravating...
I played for an hour, trying out about five different classes. During that hour, my team lost every single stage of every single game. I got a total of three points, and maybe 5 kills. These facts may be connected!
Also, in the 'insult to injury' file:
"As a consolation, you did more damage as a scout this time than any other try as a scout! You did ___6___ points of damage!"
And of course, I then got to spend all night dreaming about the futility of playing in first person shooters all night long. In the dream the enemies literally had godmode, instead of just seeming to be invincible like in actual play.