Dome. If you get up on the catwalk and sit just above the ladder it's free headshot time. The dude finished with 74 kills. I was climbing the ladder at the start of the game when I suddenly became the first infected and received a shotgun round to the face. I respawned, for some reason with a throwing knife, and everyone was already up on the catwalk. I died, and respawned again with a throwing knife and took someone out on the catwalk with it but he didn't become infected. Then I died and died and died and died and died and died and died. Then someone quit out (probably because it was too boring) and someone else joined. Guys joining late have to make it to the ladder and I got him before he got there. All my kills as the infected in that game (4 of them) were people joining midway because others quit due to boredom.
You can really use this game mode to take your K/D through the roof. Be lucky enough not to be the infected at the beginning, get a bunch of kills, become infected and go sit in a corner somewhere until time expires. Every game would have you at 10, 15, 20 and 1.
Interestingly, there's a whole lot of glitchy spots in these maps that I didn't know existed until this game mode came around. Some guy jumped off the balcony of the hotel on Seatown and ended up suspended above the ground against the wall where no one had a hope of getting to him.
I was growing bored of MW3 but this just accelerated it.
