Again not recommending the mod: as its a performance hog but as stated in the description A-Life in all its forms is somewhat just marketing, this isn't to say Stalker 2's implementation isn't borked as it obviously is! its a total mess and one we will hopefully see fixed soon.

personally i would like to see what was originally promised with A-Life 1.0, where we can follow an NPC across the map, watch them fight, avoid combat or collect artifacts. watch them slowly rack up kill, improve gear or die at the first mission. the closes we got was with Anomally and i wont be surprised if that is how we will achieve a fuller experience this time around.

anyway i didn't link the mod in vane, the dev has some in-depth knowledge and was a good 5 minute read.