Hey Gamers! Welcome to 2v2 Gnashers aka "Boxes" in GoW4! We have FINALLY made it to the FINAL achievement list for this game at a whopping 4000GS.
Below is a video that will discuss the things you need to know to unlock this achievement. The second video is a basic tips and strategies for this game mode to help you not only get this achievement, but also the achievement for 25 wins!
I hope you find the guides helpful, and we will see you next time!
-Damron OutTips and Strats