Far Cry 2 and it's randomly spawning gun-truck patrols every THREE damned minutes.
I get it, the country is at war and there are a bunch of angry people with guns who want to kill me because I've betrayed every faction in the game at least twice. Fair enough. But seriously, how many fucking trucks do these rag-tag militias have? I must have blown up at least a thousand of the damned things.
And Call of Duty 2's veteran mode. It's so damned hard.
German soldier- "Oh, I'm sorry, did you shoot me in the head? I should be dead you say? Damn, it sucks to be you then. Well, my friends and I are going to throw about twenty grenades at you at the same time since, in all fairness, you did shoot me in the fucking head."
Me- "I die!"