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Halloween Interloper | Zombie Survival Map

This is the Halloween version (This one is much better for Zombie Survival)
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Deep within the Borderworld, Xen. Lies a decrepit research lab. You and your fellow scientists are the only ones left to defend it. Holdout in the maze-like albeit small facility while hordes of zombies attempt to make you pay!

This is a Zombie Survival map based on that one Science lab you see in Black Mesa near the beginning of Xen.
ALL CONTENT IS PACKED IN. BLACK MESA IS NOT REQUIRED.

Credits all go to Crowbar Collective for the awesome assets. Go buy Black Mesa!

Report bugs to the comments!
Thanks to Utahball and Ruki-san in the Discord for fixing my problem. Screw the Batteries.