COD 4, 32 people in Killhouse, 30 minute time limit. Seven hundred and fifty one kills, 78 deaths. To explain how this happened.
Overkill with dual machine guns,
Take cover behind the wall opposite the entrance of the wooden building,
Spam bullets back at the guys spamming rounds at you through the wall,
Get a helicopter, use it,
Get ANOTHER helicopter, use it,
keep spamming until you run out of ammo for both weapons, knife, knife
die,
die,
kill the camper, spammmmm
and repeat all the above until the time limit runs out.
I got a 58 kill streak at one point because of this. Invited into the server, and people were like "NFW anyone can get that many kills in half an hour." Blame the insta-spawn, and the deep penetration perk. After the second round where I got that high score, I left and never visited that server again. That wasn't a fighting match, that was luck.