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[SP] DoubleYou

"It's a little bit difficult". A map for exrerienced players.

Click here to download DoubleYou

God bless the quick save's inventor...(Portal: Prelude)

KNOWN POSSIBLE SHORTCUT:

Spoiler
Sorry, only logged-in users can see spoilers.
. Please don't abuse the puzzle that way. It will be fixed later.

God bless the quick save's inventor...(Portal: Prelude)