>>412716918
Don't move fast in their field of view, shoot first, serpentine if you get caught in the open and bring enough ammo to kill them all. Headshots on mimics and core shots on fragments deal increased damage, I can't remember what it is in vanilla but for the STALKER mod it's 4x. The guns in ITR are also very accurate so you can even snipe with a PM against unarmored mimics.

My preference for increased spawnrate combined with this mod allowing enemies and loot to spawn anywhere makes the game feel far less predictable. Pic related scared the shit out of me when on only the 2nd mission a Harvester came out of seemingly nowhere to block me into the hangar after I rushed in to kill the rift. Somehow I managed to kill it with a PM but it is on the reduced enemy health setting.