Makes xenomorph stuns factor in the target's melee armor instead of always stunning for a full 5 seconds.

code/modules/mob/living/carbon/alien/humanoid/caste/hunter.dm

@@ -96,7 +96,7 @@
 		if(istype(A, /mob/living))
 			var/mob/living/L = A
 			L.visible_message("<span class ='danger'>[src] pounces on [L]!</span>", "<span class ='userdanger'>[src] pounces on you!</span>")
-			L.Weaken(5)
+			apply_effect(5, WEAKEN, run_armor_check("chest", "melee"))
 			sleep(2)//Runtime prevention (infinite bump() calls on hulks)
 			step_towards(src,L)
 

code/modules/mob/living/carbon/human/human_attackalien.dm

@@ -34,8 +34,9 @@
 			M.do_attack_animation(src)
 			var/randn = rand(1, 100)
 			if (randn <= 80)
+				var/obj/item/organ/external/affecting = get_organ(ran_zone(M.zone_sel.selecting))
 				playsound(loc, 'sound/weapons/pierce.ogg', 25, 1, -1)
-				Weaken(5)
+				apply_effect(5, WEAKEN, run_armor_check(affecting, "melee"))
 				for(var/mob/O in viewers(src, null))
 					if ((O.client && !( O.blinded )))
 						O.show_message(text("\red <B>[] has tackled down []!</B>", M, src), 1)