Well, today's game aren't the same like the early ones from the 80's/90's, those were a bitch. Especially games like Sonic and Mario, just one misstep and you're restarting the whole level. I guess you could say LittleBigPlanet has some hazardous levels, at least from the few times I did play it.
Man, I think my weakness is jumping. Some games make it that you either time the jump correctly, or fail, there isn't a "just barely made it".