I also turned off the fatigue damage from gunshots because woah those guys shoot FAST and youll be down on the ground before you can shoot 3 times. And ive killed most easier enemies, lol. I even went into a dungeon from one of the mods i use (A World of Pain) to kill some more geckos, and i bought extra ammo from the ammo&guns shop that this mod adds to get some extra ammo and experience, because i seem to be low on everything - ammo & food.