Dark Sector

The Infection game modes requires a minimum of 4 players to start and play a match. Most people that are playing this under-rated game are usually boosting, using the method described @ x360a.org:

"The best way to boost this is have the infected player grab a shotgun and stand at the enemy spawn on Court. They only spawn to the left or right of this section so you can kill them almost instantly when they spawn. Taking turns with four players you will net about 100 points every 45 minutes. Setup a 60-min match and have one person get 95-98, then the next, then the next and the last person can finish to 100. Rotate who gets 100 to be fair."

Once 500 points has accumulated, the cheevo will pop at the end of the match.

Have the host (the one with the best connection) set up a 'Ranked Infection' match on 'Mausoleum'. You need a minimum of 4 and maximum of 10 players to do this, but we found 5 or 6 to be preferable. Set the kill limit to 100 and time to 60 mins.

The person going first should join the match last to start as the Infected, use the refresh option on the custom match search to ensure this.

Run straight across the map to the human spawn and ignite your Glaive with the fire beacon. The humans should huddle together, then the Infected can kill them all in one fire burst, either up close with or throw the Glaive (hold , throw with then burst with ). Repeat.

You can either go to the full 100 and restart a new match, or go to 95 then the next player kill the Infected to become infected and go to 95 until everyone has had their turn.

This method is at least 2 minutes faster per match than Court, Deck or any other map.

Big thank you to jammiejay85, BiG Neilbug and evilqpa for helping me discover the fastest and most efficient way to boost this.