These missions are clearly designed with co-op in mind, the race with different outcomes in Fire It Up or the Sniper/Front Line section in OG Kush. While all cool, to quote Pavel; my God... they just keep getting younger, and dumber.     That's from my personal single first-time playthrough of the 3 missions.   Rockstar may have been dabbling with co-op only mission design and they are capable of making some real belters when they're not as backed into a corner like wi