River Sniping Spot Cheat for Gears of War 2 on the Xbox 360

First you need Skorge (beat game on any difficulty).

Then go to the building with the longshot rifle and put a granade below but next to the wall that has the hole in it.

Then be under the hole and after it blows you should be on the wall.

Once you're on the wall you'll have good sniping spot.

If not, try again - it works 95% of the time.