patching some combat mode edge cases and issues.

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

@@ -789,6 +789,8 @@
 		if(IsUnconscious() || IsSleeping() || getOxyLoss() > 50 || (HAS_TRAIT(src, TRAIT_DEATHCOMA)) || (health <= HEALTH_THRESHOLD_FULLCRIT && !HAS_TRAIT(src, TRAIT_NOHARDCRIT)))
 			stat = UNCONSCIOUS
 			blind_eyes(1)
+			if(combatmode)
+				toggle_combat_mode(TRUE, TRUE)
 		else
 			if(health <= crit_threshold && !HAS_TRAIT(src, TRAIT_NOSOFTCRIT))
 				stat = SOFT_CRIT

code/modules/mob/living/carbon/death.dm

@@ -7,13 +7,15 @@
 
 	if(!gibbed)
 		emote("deathgasp")
+	if(combatmode)
+		toggle_combat_mode(TRUE, TRUE)
 
 	. = ..()
-	
+
 	for(var/T in get_traumas())
 		var/datum/brain_trauma/BT = T
 		BT.on_death()
-	
+
 	if(SSticker.mode)
 		SSticker.mode.check_win() //Calls the rounds wincheck, mainly for wizard, malf, and changeling now
 
@@ -63,3 +65,8 @@
 		var/obj/item/bodypart/BP = X
 		BP.drop_limb()
 		BP.throw_at(get_edge_target_turf(src,pick(GLOB.alldirs)),rand(1,3),5)
+
+/mob/living/carbon/ghostize(can_reenter_corpse = TRUE, special = FALSE, penalize = FALSE)
+	if(combatmode)
+		toggle_combat_mode(TRUE, TRUE)
+	return ..()

code/modules/mob/living/simple_animal/hostile/megafauna/colossus.dm

@@ -651,7 +651,7 @@ Difficulty: Very Hard
 			L.heal_overall_damage(heal_power, heal_power)
 			new /obj/effect/temp_visual/heal(get_turf(target), "#80F5FF")
 
-/mob/living/simple_animal/hostile/lightgeist/ghostize(can_reenter_corpse = TRUE, special = FALSE)
+/mob/living/simple_animal/hostile/lightgeist/ghostize(can_reenter_corpse = TRUE, special = FALSE, penalize = FALSE)
 	. = ..()
 	if(.)
 		death()