Does it matter if you turn on infinite fuel or infinite ammo? What about the "Player can not die" option? I can't seem to gain prestige points or experience points from playing through missions on the campaign mode. Does the fact that I have those options turn on make null of my chance of gaining any prestige or experience points?

Great..that means I have to actually get good at the game now. Oh well, at least then I'll get real satisfaction out of playing.