So I guess I decided that I haven't had enough challenge lately, so I looked up mods for Subnautica (by Unknown Worlds Entertainment) to add more challenge to it. This is the "Deathrun" mod, (by Cattlesquat) a mod that is said to be designed to bring the challenge of classic Roguelike games. (Presumably meaning games like Nethack, or for that matter, the original Rogue)
Unbreathable atmosphere, the Bends, altered animal AI, new blueprint recipes, and more are (apparently) in this uniquely challenging mod. I can't wait to see what it brings me. :)
The Deathrun mod can be downloaded from here: https://www.nexusmods.com/subnautica/...