Please update or upgrade to Mojave (or Catalina, if possible). The red tint and graphical artifacts are a known driver issue with some Intel graphics (Iris based, or integrated graphics earlier than Haswell), which should be fixed with the OSX 10.14.4 update or later.
The screen being very dark is a known issue if HDR is enabled on a system that does not support it. Hold the Cmd button on game startup to get to the configuration menu where you can disable HDR again.
If both your GPU and display have HDR support, this may also be an issue with the settings. To calibration HDR: - Ensure you have Automatic Brightness Adjustments enabled (System Preferences/Display) - Go to Options->HDR settings - Start with Max Brightness and Min Contrast - Press ‘Apply’ - DON’T apply general video settings. Just click close button and Discard the settings; there is a known bug with this - next, adjust the HDR Brightness/Contrast settings to your preference (note that there is a known issue with this that can result in the changes not being applied, which should be fixed in a future game update)
