I'd have to go wth The Price of Freedom. Wing Commander I find can be somewhat inonsistant, like sometimes I find it easy, sometimes hard. Vengence of the Kilrathi I made do even though it played at ten times the speed, so I think that wouldn't be too hard. Heart of the Tiger I can nearly beat on Nightmare. The Price of Freedom however I found was consistantly hard from start to finish. I also vote this because there are some scenes that are a little hard to stomache. The Telemon massecre for example. I'm surprised that they didn't have someone throw up there.