Left 4 Dead 2

There's not much to say about this achievement; if you play Versus enough you'll probably pick it up sooner or later. If you're looking for tips on how to land a good ride, you should probably jump a survivor:

1) When they are far away from their team. If they're far enough, their team may just decide to leave them.

2) When everyone has been covered in puke. Use the combination of an instant horde and next to zero visibility to make off with an unlucky survivor. Even better if a Spitter can cover your escape by putting some acid between you and the enemy team.

3) When the enemy team is at a cliff or drop off. If you can nab the last one to jump and drive them back, 12 seconds should be a breeze.

4) When the enemy team is otherwise distracted, likely due to a tank.

Whatever you do, don't jump a tightly packed group of survivors who are aware and alert; you won't help anyone.

Good luck, and good head-humping!

Here's an easy way to get both and with a minimum amount of effort:

- Play vs mode with two controllers: your profile as Infected and the second controller be the Survivors. Regardless of the map, use the Survivor to kill two of the other survivors.

- Once two of them are dead, spawn as the Jockey. Jump on the AI Survivor and ride him until he's downed*.

- Move your Jockey out of the downed AI's sight and bring the player controlled Survivor to the Jockey. This is so the downed AI cannot kill the Jockey.

- Use a health pack on your player controlled Survivor if he's damaged to ensure he's got plenty of health.

- Hop on the player controlled Survivor and ride him until he dies. You'll get both achievements.

*I didn't have any problems with getting out of the AI's sight in time, but if you wanted to play it safe, down the AI character twice first, so when the Jockey takes him down, he dies.

If you've got a friend on XBL, have them join you as a Spitter and you can easily knock out at the same time.

i got this in scavenge mode yesterday. play with a friend and as the jockey, hide somewhere until the clock winds down. pounce someone right before the clock stops so ur on them when the game ends and when the next round starts, the achievement will pop up

it was really random and there are better ways to do it but that takes less time than incapping everyone

the trick that worked great for me was doing a private scavenge match with two controllers. the port worked great for this- there's a gas can real close to the start area. had the second controller pick up a gas can and the bots protected it from any zombies while i kept it not moving. let them kill my infected character until I spawned the jockey. I took him over to the generator leaving the bots and controller 2 sitting at the first gas can location and once in position around the corner walked the 2nd controller quickly to the jockey's location and grabbed the first controller again and jump him. even though he dropped the gas can and the level was over, the timer kept counting for the achievement into the loading screen for switching sides

Great tips above from Tech.

I find that I've gotten many of these achievement in the Hard Rain scenario corn field. Of course, use common sense, don't jump a group that is together and alert, wait for your boomer to cover them in puke, the horde to rush them, etc...then jump someone and take them into the corn field. I've done this successfully...probably every time I've played that map, it's incredibly easy and the corn field makes it hard for the other survivors to shoot you while you ride one of them off into the distance lol. Good luck!