In the level "Helms Deep", there is a section where the player must climb a ladder to reach the top of a wall, and once atop it they must shoot and kill a certain number of crossbowmen to clear this section and activate a cutscene to get to the next area. As the crossbowmen spawn, they will occasionally push each other out of bounds rendering them unkillable. When this happens, the player will be forced to wait until the game activates the cutscene rather than having it activate upon killing the designated number of enemies.