Left 4 Dead 2

If you want this to be debatably easier have your guest die to certain edges of the maps when they are the survivors and you're the infected also set the number of rounds needed to win, to a single round. If either controller doesn't move for too long, then you may get disconnected even on local servers. It's instant death for any situation where they can fall out of the map provided, they don't grab a ledge to get the other survivors to help the guest and you can easily avoid this by doing a running jump with good speed. I used the No Mercy campaign, Mercy Hospital rooftop, but I seem to recall the mill town from Hard Rain having this available in the base game.

self-explained achievement,but the way you did it's the best and easiest to do when playing solo.