I have an upcoming game where the party has to infiltrate a small Imperial Base. One of the characters is an ex-military and there's a potential for dark side emotions when he finds out that the troopers at the base mutinied and killed their commanding officer.
My motivation is that I want to push the character's morality to the edge with this. Somewhere between fighting to suppress his anger to "Hulking-Out".
My question to FaD GMs: What game mechanics can I use to nudge him with towards the Dark Side? I was thinking give him conflict on seeing the body of the dead officer. What about strain? Maybe both, like he gets conflict and if he tries to push it down he gets strain?
Any thoughts from more experienced GMs?