I know I'm late to this thread, but I have HORRIBLE Mario skillz, but for me I think that what makes Raiding the Giant's Vault much better in this respect compared to, say Coal Chamber (which is *my* most hated quest) is the fact that it's a solo quest. So if I'm leaping and falling and leaping and falling and leaping and bouncing and falling -- then at least the only person getting annoyed is me and I actually have the luxury of taking it slow and careful if I feel like it. But if I'm having these problems in a group quest, the patience of others can wear thin pretty quickly, which makes me more nervous, which of course makes everything much worse.