Yeah, there maybe moments when a gamer might feel rage when trying to complete through a game scenario, but some petty issue messes up with everything and they have to go back to what they were doing. Like in Project IGI, an effing soldier, usually a Spetnaz pops up from behind a door that you tried to open, and it's AI you know that works for him, that he decides to go for a headshot and... Bam! You're dead. So redo the mission over again. Happens all the time, even in other games, when you're about to complete a game episode, then suddenly a silly thing pops up and you're gone. Redo please!