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Our survivors wake up in Aperture, They realize scientists there use them as test subjects for their experiments. Guided by their voices,video screens and notes, their only way out is to move ahead to the next test! But the plot comes to a twist when they release Alexis to do their jobs for them! Will they use this chance to escape or will they fall under the claws of the WITCH! This is a story based training map that will teach you how to kill witches! A mix of Portal and Left4Dead... BE SURE TO CHECK OUT THE VIDEO!! Also check out the Expert playthrough video and HD wallpapers! Links are in the changelog! Enjoy!
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Developers & Credits
Version 3.0 Complete
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a fun Left 4 dead Portal crossover