Added brightness settings so you can now have it so you can see most of the level, none of the level and have make it through just on your flash light and the ambient light and the other option is standard lighting.
You can now use the RBFG grenades to light up areas instead of just using them to blow aliens up as you can see on the below image.
https://i.ibb.co/DwcRfBs/Flare-grenade.png
The screenshot is using the darkest setting.

