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18 September 2012
- 04:1804:18, 18 September 2012 diff hist 0 Portal 2 Chapter 2 Test Chamber 7 No edit summary
- 03:4603:46, 18 September 2012 diff hist +305 m Portal 2 Chapter 2 Test Chamber 7 Another extra. What happens if you attempt to keep the Companion Cube and go through the lift. Also unlocks the Preservation of Mass achievement.