The TheUnknownV1.2.zip file you have requested: Maps Levels Missions / Single Player / Portal 2 Map - The Unknown - 3.25mb is not available. Perhaps try browsing all files for the game Portal 2 and upload any files you want to share or are missing. This is the only information we could locate:

You awake in a pile of broken glass, with a pounding headache and no memory of how you got there. Your only goal is to find your portal gun and escape from the building. You awake in a pile of broken glass, with a pounding headache and no memory of how you got there. Your only goal is to find your portal gun and escape from the building.

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