Pause, then go to: Options > Video > Advanced, and make sure your settings look something like this:















Congrats, you're half-way there in this helpful guide, your game should be looking something like this:

Enable the developer console by going to Options > Keyboard > Advanced > Enable developer console, now, press ` to open it up, and type in the following commands:

• sv_cheats 1 (Activates cheating)
  
• mat_showlowresimage 1 (Pixelates all textures)
  
• fps_max 5 (Sets the maximum framerate to 5 frames per second)
  
• mat_fullbright 1 (Makes all lighting in the game be full bright)
  
• mat_viewportscale 0.15 (Reduces the resolution of the screen)
  
• r_WaterDrawReflection 0 (Removes water reflection)
  
• r_WaterDrawRefraction 0 (Makes water one-colored)
  
• thirdperson (Makes the game third-person and harder to aim precisely)

If all is done correctly, your game should look like THIS:

Now you're ready to play Half-Life Source the way it wasn't meant to be played, enjoy! :)