Main article: Portal 2 Drop Box (20 ) (Silver) How to Obtain: Place a cube on a button without touching the cube. TipsEdit In Depth Explanation. Categories: PS3 PC Portal 2 Portal Single Player Missable Xbox 360 Valve Achievements Trophies Role Playing Game Puzzle Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.
) (Silver)
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