For use in the Remastered version. This will add a flashlight to your inventory to use if you want to play around with it in all of the campaigns.
Guide to Enable New Flashlight for Any Campaign
How to add the new Flashlight to your inventory
Press “~” to open the console and then type…
It’s neat seeing projected shadows casting on the OG looking game. Shadows will cast behind any object, enemy or edge of a wall/box. They actually made this flashlight a item pickup at the start of one of the original expansion campaigns but not for any others from what I can tell, enjoy.