Tom Clancy's Splinter Cell HD

This can be a tricky trophy to unlock. Again, I believe CIA Headquarters is the easiest to achieve this as I managed 6 or 7 in one playthrough. Basically there are several areas when playing through that’ll give you an opportunity to do this.

In the Abattoir level you’ll come into a room over looking a bathroom area. Jump on the barrels and jump and grab onto an overhead beam. Now take that beam down to the very end and an enemy will be directly underneath so press and drop on him.

At the start of the CIA Headquarters mission; when you exit the fan vent there’ll be one maintenance guy. Get on the fence and go over to the other side and wait for him to return from the hall, which he will eventually do, then simply press to drop on him.

At the beginning of Chinese Embassy, in the dark alley, make a little noise and stay by the fence on the upper portion and drop on the enemy. Then go further down the alley and do a double jump off the police car onto the overhang. When the guard returns to his place, drop from here onto him.

These are 4 easy ones which you can do on both playthroughs equaling 8. You’ll then need to grind the other 5.

The best level is CIA Headquarters. In addition to the guard I already mentioned, in the room after typing in the code 110598 there are 2 maintenance staff. Get to where the first is by sneaking and then do a legs split in gap jump by pressing and then again which you hold to position yourself high up between the shelves. Drop down and knock him out and the other maintenance guy will raise the alarm bringing a guard to check out on things. Get in the same position as before and wait for him to come under you and press to drop on him (These two were discovered by SaberBlade.) Then you can just go near the other maintenance guy and jump off the wall and press again in his direction to land on him.

Finally, in this level, when you come out onto a balcony overlooking the server room there’ll be a maintenance guy at work so press to get onto the balcony rail. Press to jump on the rail to cause some noise so he stands up. He’ll move backwards a little and then drop and knock this guy over.

There are others to get, but hopefully you can follow these tips to get more in other locales.