I think the list of games with non-five achievements is pretty much complete. At least English complete. Or to be more accurate, games listed in the database over on TrueAchievemnts. There were a good number of games we hadn't caught before. Now if only developers would stop making more (or message me when they did). I found a good number in Windows Phone 7 games. Maybe MS put it in cert for them.
Just About Complete
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