Obtaining Portal achievements: Difference between revisions

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 | Here, you are required to earn Gold on all the challenges, you must finish all the challenges with at least a gold rating.
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-==Bugs==
-*for some reason, if a steam user has ''[[Portal: The First Slice]]'', when the player receives the Dual Portal Device, they will get the achievement Lab Rat, however, if they purchase ''[[Portal]]'', they cannot get the achievement again, despite already having it, they will not be counted for it in steam.
 [[Category:Achievements]]