This achievement requires you to kill 10 survivors across all matches.
There are lots of ways to do this achievement so here is a few:
1: Collect mines and place them infront of the power plant or the helipad. Make sure they are fully dead by shooting them once/twice with a shotgun.
2: Sabotaging the first objective so that a traitor airdrop comes in is a real good strategy because the airdrop contains deadly items such as Assault Rifles and Mines, and gun parts to create Shotguns. Load yourself with tons of guns and go rogue.
3: This one is for doing it fast; make an axe, lure someone saying there is a 2 player bunker, and kill them once they are far. You can do this with weapons and mines too.