Desura is a digital distribution app created by the Mod DB,
which allows you to install and play mods with one click. So if
you want to install Project Valkyrie and other great Half-Life 2
mods like it, we recommend you give Desura a try, it is free to
use and makes installing mods simple.  Desura is installedLet's
play! Install DesuraFor Windows(other versions)