(adsbygoogle = window.adsbygoogle || []).push({}); Start off with as many people as you like. Have everyone but one person down themself with a frag and DO NOT revive them. The fourth person needs to kill all the zombies.

When the next round starts, everyone respawns with 1500 points and the guy that was alive should have about 2000.

This is only useful for Round 1 with 4 people, because if you do it then on Round 2 everyone will have 1500-2000 points at the start of the Round instead of about 1000 like you would by just playing it. Less than 4 people means you would earn about 1700 or so by legitimately playing the round.