Prevents the player from injuring companions and companions from injuring the player. MCM is NOT required. MCM will allow the protection in either direction to be turned off at any time.
The result of two days of cooperative modding on the anomaly discord #modding-development NPC Appearance will change to match the "best" outfit in their inventory, if it is better than what they are wearing by default.
Every Anomaly player eventually learns that thermal anomalies are deathtraps. Burners are insta-death for even well-protected characters, and thermal fields will kill you in seconds.