Holdout Hi all. New version is 1.9 Added Briefing map. Added wind sound. Added new decals. Added new models. Fixed some bugs (thx to airsoft343 and his friends) Map has 20 waves. Good Luck.

How to install add-ons for Alien Swarm.
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Alien Swarm Guide
Installing Alien Swarm Add-ons
Step 1: Download the add-on. All downloads are in .zip format. (You need to open the .zip archive to access the .vpk file.) If you can not open or extract the .zip/.rar file, download and install winrar for free. Step 2: Install the add-on. Copy the .vpk to your Alien Swarm add-on directory. If this folder does not exist, create this folder. \Steam\steamapps\common\alien swarm\swarm\addons\ You can remove add-ons by deleting them from your /addons/ folder.
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