Actual lethal damage plasma; I'm not entirely sure how you'd have a non-lethal plasma gun and using lethal damage fits Rose's theme of function over form, if you're going to fight a guy, fight him for keeps. (Besides, the bad guys use lethal damage, and she's not invulnerable.)<br/><br/>Although Rose is likely to stop as soon as the bad guys surrender, fall unconscious, and / or lose a limb. She uses lethal damage more for pragmatic reasons than for sadistic reasons.