Gears of War: Judgment

Me and DeadxMaiden have found out a spawn trap so your buddy gets spawned in your aim with the flag.

-This is the fastest way we found to get this Achievement.
**The video is for the Spawn Trap

*You can get this achievement in a Private game with a second controller.

Turn on a second controller and press Y to sign in guest.

Start a Versus->Private->Breaktrough
- Round Time Limit: 30
- Respawns: 20
- Capture Mode: No
- Number of Bots: 0

Choose "CHECKOUT" as map.
Put yourself at Blue team

TEXT GUIDE:
or follow my Video to set down the spawn point for your second controller.

Happy Hunting

*Negative votes please comment why so i can edit.

This was actually pretty fast with a boosting partner.

Set the game up as follows:

Start a Private Versus Breakthrough Match on the STREETS map:

Round Time Limit: 15
Respawns: 20
Capture Mode: No
Number of Bots: 0

It would be helpful for both players to have the Gnasher, so that the achievement gaining player ("AGP" for short) can replenish his/her ammo after the first kill.

Have the capturing player capture the flag and stay at the flag spawn point. Have the AGP run to the flag spawn point. The AGP then kills the flag carrier. The AGP then stands behind the flag, looking down the alley towards where the base is and stays there.

The flag carrier should spawn on the other side of the building. The flag carrier simply turns right, runs down the street in front of the store and turns right again towards the flag spawn point. If the AGP is standing behind the flag, the flag carrier should spawn in the same place each time. The AGP need only wait for the flag carrier to pick up the flag. Get close enough to the flag and the carrier is killed quickly with the Gnasher. Rinse and repeat until the 20 kills are gained. Once the achievement pops, you can back out of the game and set it up for the flag carrier to become the AGP.

The Streets map seemed to be the shortest map for the purposes of farming this achievement.

Edit: please contact me before giving a negative vote so that I may address your concerns and adjust the solution.