A couple things in mind about this sequence:
- Anakin Skywalker is one hell of a mechanic, so I shouldn’t be surprised that Darth Vader was able to repair himself using a broken droid.
- If Darth Vader was a playable character in the KOTOR series, he wouldn’t be able to use a medpack but a construction kit instead.
From – Darth Vader Vol. 2 #4