Ranked by most to least difficult to achieve that elusive 100%

Hard to be completely objective because some of these titles are short narrative-driven games with no real impactful gameplay. Others are incredibly difficult skill-based games, while some just waste your time getting the last few achievements with un-fun objectives. (Looking at you specifically "Tiny and Big") So all these criteria are just sorta, kinda arbitrarily being combined to actually finish this damn list.