Star Wars: The Force Unleashed

In a few spots in the Rebel Base, you'll see cables attached to machines with orange sparks coming out of the cables. Pull the cables out using Force Grip. Lightning will come out of the disconnected end of the cable. Either use Force Grip to move the cable around and shock nearby enemies or use Force Grip to bring enemies to the cable and shock them that way. Even though they're only in a few spots, it's pretty easy to get 15 enemies shocked since there are plenty of Rebel troops around. The Hangar is a good spot for this as there are quite a few of those cables and enemy troops around.