I just got started tonight on the KDF Masters Of war series, but on the second mission Episode 1 Part 2, I got to the end, and tried for a half hour to kill the Chief Medical Officer. I switched to bat'leth, then back to disruptor, and nothing could kill him. In the rare times that I could expose or crit him, and he'd immediately heal to full health.
From the reviews, it's clear that this mission is completable. What's the secret? Stacks of large power cells?