Hi Boglinqueen,
Download this patch: https://www.dropbox.com/s/4dfyi384ggrnm0k/RinTimberPerspective.rpa?dl=0 Now, browse the local files of Alpha Hole Prison by right clicking the game name in your Steam Client. Then click 'Properties' then 'Local Files' then Browse Local Files'. Drag this patch into the Game folder. This will give you the DLC!