: Execute setup.exe and follow the on-screen prompts to install the game.
: Ensure all downloaded parts (Part 1, Part 2, and Part 3) are in the same folder. Black.Mesa.Definitive.Edition-CODEX.part3.rar
Watch this full chapter walkthrough to navigate the challenges of the Black Mesa facility: : Execute setup
: To enable cheats like God Mode or Infinite Ammo, add -console to your launch options and press the tilde (~) key in-game. 📺 Gameplay Walkthrough Black.Mesa.Definitive.Edition-CODEX.part3.rar