Plants vs. Zombies

Versus mode is 2-player co-op on the same console. Turn on a 2nd controller and choose sides. Once the game begins you can make player 2 forfeit, giving you a win. Repeat that 4 times. Alternately, you can play through it. It's quicker to use the zombies. Spawn the regular zombie and send him down a lane without any pea-shooters. Once he breaks through the defense the lawn mower will kill him. After the lawn mower is gone, spawn a football player and send him down the same lane. He will run all the way down and enter the house, you win! Repeat 4 more times for this easy achievement.

1. Once you unlocked VS Mode, go to it.
2. Plug in a 2nd controller and start up the game
3. As soon as the game starts, make the 2nd controller forfeit
4. Repeat 4 more times and achievement unlocked

If you prefer to use a video guide, then follow the video below. (Thanks to WoodlandSpirit for the link)

Go into Versus mode with your two controllers, and simply quit the game with the 2nd controller. This will give you your first win.

Do this another four times and the achievement will unlock. This saves playing through five full games.

The easiest method to unlock this achievement is to use a 2nd controller. Go onto the VS game mode and use a 2nd controller to start up a game. Once the battle starts, press pause on the 2nd controller and forfeit the match giving player 1 the win. Repeat this process until you are on a 5 win streak and the achievement will unlock.

Here is a short video guide I have made to follow.