
If you've already installed the game and are looking for a guide to complete it, here are the key resources:
: If lighting looks strange or portals aren't transparent, you may need to edit your autoexec.cfg file in the portal_rtx/cfg folder. Portal.with.RTX.part3.rar
If you are trying to install or mod the game using these files, follow these general steps: If you've already installed the game and are
100% Achievement Guide for Portal with RTX - Steam Community Portal.with.RTX.part3.rar
: If you are using these files to play on a Steam Deck, common guides suggest extracting the files into a temporary folder and then moving them into the game's .trex directory (found via manage > browse local files on Steam) to replace existing files. Gameplay & Achievement Guides