S.A.M. (GTA III)
In a GTA game, any mission that involves a countdown timer sucks. It adds an extra layer of stress and annoyance on top of everything else. S.A.M., one of the final missions in GTA III, not only has a timer, but also annoying armored enemies and a plane that you have to shoot down with a rocket. Miss? Start all over. It’s infuriating, just getting there in time only to miss the plane, or die trying to escape. A huge pain in the ass.