Gm_redox is a singleplayer puzzle-action map for Half-Life 2: Episode Two. It also works in Garry’s Mod but HL2: ep2 is required for this map.
I recommend playing this is in a dark room because some areas are quite dark. Also, I do not recommend playing this with hard difficulty. (Unless you really want to)
A screenshot taken of the whole map from outside the map:
My previous singleplayer maps: (if you liked this one, you might also enjoy these)
Feedback is appreciated. I hope you all enjoy this map.