Left 4 Dead

*You may not be able to get this while connected to Live due to a bug in Valve's servers. If that is the case, unplug your Ethernet connection/wireless adapter or stay signed out of Live and try again*

When playing as a hunter, you can deal damage from the actual pounce you make onto a survivor. You can inflict up to 25 points of instant damage onto a survivor from making a good pounce. The damage you do while on top of a survivor and "punching" them does not count for this achievement, it has to be 25 points of pounce-damage.

Using two controllers, or, if you can get it to pop online, substitute Guest account with a friend on Live...

In Crash Course, play on Split screen versus with your main account (the one you want the achievement on) playing as infected.

With your Guest account playing as a survivor, kill all of the other survivors (this way when you miss as the hunter, they won't kill you and you get another go at it.) Now park yourself up against the guard rail between the end of the guard rail and where the helicopter is laying. (See video for placement.) Leave this account there until you get the achievement.

With your main account, get killed until you become the Hunter and climb up the building at the beginning of Crash Course as shown in the video. It is the two story warehouse that is next to the crashed helicopter. When you are on the roof, stand a few feet back from the ledge and crouch. Aim up into the sky right around the moon and then pounce. As you jump you need to quickly aim down and until your target reticule is on the survivor. Once you land on the survivor it should indicate you've inflicted 25 pounce damage and the achievement should pop up.

When I did this, the only problem I had was missing my target. All you have to do is adjust how you are aiming once you are in the air. Once you get that down, you should be able to get the achievement no problem the first time you successfully pounce that survivor.

It took me about 5 tries to get the jump right.

After reading multiple posts on this one all over the web I decided to give them all a go and see which one worked.

The soloution which worked for me:

1. At the dashboard, sign in with the account you want the achievement for.

2. With a second controller, sign in with a second account. This has to be a proper account NOT a guest account. EDIT: This does work with a guest account - thanks to SIL3NCEikillyou for that tip.

3. Load up L4D and make sure your network adaptor is unplugged. The reason for this is, you need to be on a local server as Valve's servers are having a little trouble and the achievement won't unlock while playing on them.

4. Start up a versus game with the account you want the achievement for and play as the infected.With the second account, play as the surviours.

5. Follow the steps in the video. Make sure you kill all the other surviours first.

6. This also works for the Smash Hit achievement.

Hope this helps!

Another great place to get it is at the beginning of the first chapter. Down the first ally there is an escape ladder on the left buildings. Go on top the building behind it. Jump over onto the ladder and go up the stairs until you can't go anymore. Then pounce on the survivor from there. Just make sure the survivor is at the end of the ally. In front of the first building across is the fence. Hope this helped.

This achievement Has not quite unlocked for me yet; despite several 25 pounces; However.

If you Don't feel like going through the business of a secondary guest account and a versus game by yourself, The easiest way to do this achievement is in the finale of crash course. When the Survivors decide to start up the generator, it gives hunters more than enough time to line up a pounce from the rooftops adjacent to the generator. If you miss; you could always wait until they have to restart it.

Cheers.