Kristopher bounced off the wall. he had been thrown in his time by better men, And he rolled, bounced and jumped. It had hurt, bad, but he was used to pain.
"Right. Invulnerable, you are not, and you hit like a girl, sithboy."
In mid-air, he vanished again, traveling by his mind.
When he reappeared, he twisted and kicked, right at the base of Vader's neck. A blow that would not kill, but would do damage, if it landed.