Extreme Survivor

The toughest thing on the list. Extreme Survivor removes manual and checkpoint saves - the game only saves when you reach a campfire and rest, and healing resources are brutally scarce. A death sends you back to your last campfire, so you can lose a lot of ground in one mistake. Do it last, on a route you know cold. Skills and gear from a completed save carry into a fresh Extreme run, so go in fully upgraded, play ultra-cautiously, stealth or skip every fight you can, keep herbs for bandages, and rest at every single campfire. Some versions allow a campfire save-backup on console to protect progress - look it up for your platform. Grants The Price of Truth but not the Survivor clear.