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Door Prize achievement in Portal 2 – TrueAchievements
https://www.trueachievements.com/a149562/door-prize-achievement
How to unlock the Door Prize achievement in Portal 2: Examine all the vitrified test chamber doors. This achievement is worth 20 Gamerscore.
Door Prize – Portal 2 Wiki Guide – IGN
https://www.ign.com/wikis/portal-2/Door_Prize
You can use a portal to get high above the Control Room and enter a small office. In the corner of this office is a cabinet with a door behind …
Door Prize trophy in Portal 2 – TrueTrophies
https://www.truetrophies.com/t28705/door-prize-trophy
How to unlock the Door Prize trophy in Portal 2: Examine all the vitrified test chamber doors. This is a Bronze trophy.
Portal 2: All Doors Locations (Door Prize) – GamePretty
https://www.gamepretty.com/portal-2-all-doors-locations-door-prize/
There are 6 doors total, 3 in Cave Johnson(elevator shaft level) and 3 in Potato(potato level). Each group of 3 are close together. In Cave …
Portal 2: Door Prize Achievement | Video – Gamer Guides
https://www.gamerguides.com/portal-2/videos/444
How many vitrified doors are there in Portal 2? – Arqade
https://gaming.stackexchange.com/questions/80309/how-many-vitrified-doors-are-there-in-portal-2
I’m trying to get the Door Prize achievement in Portal 2, by investigating vitrified doors. I don’t want spoilers to their locations or …
Door Prize Achievement – Portal 2
https://www.xboxachievements.com/game/portal-2/achievement/51234-door-prize.html