Kills the combat droid PROXY

As though from a position high above, he watched his Master spin around to face Obi-Wan Kenobi.

The Dark Lord froze. In that moment of hesitation the long-dead Jedi Master attacked, his face a mask of determination. At the very last moment Vader parried, then parried again. He took a step backward, toward the cliff’s edge, and then rallied. With two sweeping strokes, so fast they blurred in the cold air, he disarmed Kenobi and slashed him in half.

The Force Unleashed I, Chapter 35, 386