HL1 Styled Fast Zombie Rig

3D Model

OG mod: https://www.moddb.com/mods/half-life-2-classic/downloads/ravenholm-demo

GMOD Addon: https://steamcommunity.com/sharedfiles/filedetails/?id=3272624772&searchtext=half+life

and for the uneducated people no its not in hl2 its fandmade.