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Duck Army Intro

Replaces the startup movie with the viral Duck Army.
Once subscribed, load it in game. Once it is finished downloading, exit and go to your program files and enter the file path:
Steam/ SteamApps/ common/ left 4 dead 2/ left4dead2/ addons/ workshop.
Scan the images for a image relating to the ducks, and open the .vpk file with the same name using GCFScrape. Once opened, extract the .bik file and extract it to your desktop for now. Now going back to your program files, enter the file path:
Steam/ SteamApps/ common/ left 4 dead 2/ left4dead2/ media.
Find the .bik file with the same name as the one you extracted and replace it with the one on your desktop. I suggest tucking the original .bik file somewhere safe incase you want to change it back. Now exit out of all those folders and startup L4D2.
If you have done it correctly, you should crack a grin at seeing this all too familar Youtube video.
Enjoy!