Magical naive, cute girl wich is the key to the XYZ of plot-doom. Wich your hero cant help but save and protect no matter how secretive she is about everything.. its pure trust right there.
Authorities are always incompetent, evil and corrupt. Always.
Whenever cutscenes comes up your hero become stupid and incompetent.
Always save the whole planet/world/universe (rarely small-scale goals, like save your city)
Mid-powered villians never get shot or killed early in the game, even when everything screams at you "BIG BAD KILL NOW" and you get 10 minutes to actually kill them.. something happens (or nothing happens) and he gets away.