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Valve Intro Dunk

Original Creator: https://gamebanana.com/mods/502087
I DID NOT MADE THIS MOD, ALL CREDITS TO THE ORIGINAL BEATIFUL CREATOR.

MANUAL INSTALL. (NOW WITH A TUTORIAL TOO!! CHECK THE 2ND VIDEO!!)

Extract the VPK using.. well, the vpk app in the game files

C:\Program Files (x86)\Steam\steamapps\common\Left 4 Dead 2\bin

(You have to install L4D2 Authoring Tools First)
and just add everything the mod folder has to media.

C:\Program Files (x86)\Steam\steamapps\common\Left 4 Dead 2\left4dead2\media

Note: I repeat, i did not made this mod or take credit for it, the original author is Vengeance. (from gamebanana)
https://gamebanana.com/members/3266112
I dont know if he/she already uploaded the mod to the Steam Workshop.