Old version of Half-Life 2, Pre-Orange Box/steampipe update. Read description.
Google Drive link: Drive.google.com
Install this old version of HL2 then replace the hl2.exe file provided within the google drive folder. Icon file for Smod included.
Do not press "C" when the console is opened, this crash the game for some reason. You can workaround this by typing [Any other lettter]cl_drawhud 0 for example, then delete the letter in the front.
This old version of Source does not support "custom" folder or any models that compiled post Orange Box update (no vpk)