New Left 4 Dead campaign from the creators of Portal: Prelude

Need a new reason to play Left 4 Dead? Check out “I Hate Mountains.”
It’s a fan-made campaign from the group that created Portal: Prelude.
The 5-map campaign will take the survivors through remote areas, like
forests and mountains. According to the campaign authors, “The
difference is that our campaign is entirely nature-oriented, there are
only a few buildings and most of the action takes place in outdoor
environments, which is a challenge to build in itself.”

I Hate Mountains Trailer from NykO18 on Vimeo.

I Hate Mountains Trailer from NykO18 on Vimeo.Above: Check out the trailer for “I Hate Mountains.” You can get
more details on the project and download version 1.1 at the official website