This can be easily boosted with just one friend (yes, 1 vs 1). Play on Player Match, and create a match with the following settings:
- Team Deathmatch
- 5 minutes (doesn't matter actually)
- score to 100 points
- Map: Projects
- both players on different teams
Start the game, and let one person score 100 points to win the game. Rinse and repeat until 10 wins is achieved, and then return the favor.
The Projects map is very small. It's really easy for the person who's supposed to "die" to run back to the "winner" to get killed. Always use the kill move as you get more points (15) for it. It takes about 3 minutes to complete one game. So all in all for two persons to win with boosting, it'd take about one hour.