diff --git a/code/__DEFINES/xeno_ai.dm b/code/__DEFINES/xeno_ai.dm
index 17f120ccfd..f67cb3f6dd 100644
--- a/code/__DEFINES/xeno_ai.dm
+++ b/code/__DEFINES/xeno_ai.dm
@@ -13,6 +13,7 @@
 #define WINDOW_FRAME_PENALTY 25
 #define BARRICADE_PENALTY 50
 #define WALL_PENALTY 50
+#define FIRE_PENALTY 25
 
 // Xeno AI flags
 #define XENO_AI_NO_DESPAWN (1<<0)
diff --git a/code/controllers/subsystem/pathfinding.dm b/code/controllers/subsystem/pathfinding.dm
index e006fdeb05..552da1fb8a 100644
--- a/code/controllers/subsystem/pathfinding.dm
+++ b/code/controllers/subsystem/pathfinding.dm
@@ -11,6 +11,9 @@ SUBSYSTEM_DEF(xeno_pathfinding)
 	var/list/hash_path = list()
 	var/current_position = 1
 
+	/// Any special blockers we want to account for that do not normally block movement
+	var/list/special_blockers = list(/obj/flamer_fire)
+
 /datum/controller/subsystem/xeno_pathfinding/stat_entry(msg)
 	msg = "P:[length(paths_to_calculate)]"
 	return ..()
@@ -62,6 +65,7 @@ SUBSYSTEM_DEF(xeno_pathfinding)
 					distance_between += A.object_weight
 
 				var/list/L = LinkBlocked(X, current_run.current_node, neighbor, current_run.ignore, TRUE)
+				L += check_special_blockers(X, neighbor)
 				if(length(L))
 					for(var/i in L)
 						var/atom/A = i
@@ -125,6 +129,16 @@ SUBSYSTEM_DEF(xeno_pathfinding)
 		current_run.to_return.Invoke(path)
 		QDEL_NULL(current_run)
 
+/datum/controller/subsystem/xeno_pathfinding/proc/check_special_blockers(mob/living/carbon/xenomorph/xeno, turf/checking_turf)
+	var/list/pass_back = list()
+
+	for(var/atom/checked_atom as anything in checking_turf)
+		for(var/special_block in special_blockers)
+			if(istype(checked_atom, special_block))
+				pass_back += checked_atom
+
+	return pass_back
+
 /datum/controller/subsystem/xeno_pathfinding/proc/stop_calculating_path(mob/living/carbon/xenomorph/X)
 	var/datum/xeno_pathinfo/data = hash_path[X]
 	qdel(data)
diff --git a/code/modules/mob/living/carbon/xenomorph/xeno_ai_interaction.dm b/code/modules/mob/living/carbon/xenomorph/xeno_ai_interaction.dm
index 141220f056..6ab988988a 100644
--- a/code/modules/mob/living/carbon/xenomorph/xeno_ai_interaction.dm
+++ b/code/modules/mob/living/carbon/xenomorph/xeno_ai_interaction.dm
@@ -75,3 +75,10 @@
 // Avoid barricades if possible.
 /obj/structure/barricade/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction)
 	return BARRICADE_PENALTY
+
+// FIRE
+/obj/flamer_fire/xeno_ai_obstacle(mob/living/carbon/xenomorph/xeno, direction)
+	if(xeno.caste?.fire_immunity & (FIRE_IMMUNITY_NO_IGNITE|FIRE_IMMUNITY_NO_DAMAGE))
+		return 0
+
+	return FIRE_PENALTY
diff --git a/code/modules/projectiles/guns/flamer/flamer.dm b/code/modules/projectiles/guns/flamer/flamer.dm
index 13ccd03c3e..42a0e2ce03 100644
--- a/code/modules/projectiles/guns/flamer/flamer.dm
+++ b/code/modules/projectiles/guns/flamer/flamer.dm
@@ -17,8 +17,7 @@
 	reload_sound = 'sound/weapons/handling/flamer_reload.ogg'
 	aim_slowdown = SLOWDOWN_ADS_INCINERATOR
 	current_mag = /obj/item/ammo_magazine/flamer_tank
-	var/fuel_pressure = 1 //Pressure setting of the attached fueltank, controls how much fuel is used per tile
-	var/max_range = 9 //9 tiles, 7 is screen range, controlled by the type of napalm in the canister. We max at 9 since diagonal bullshit.
+	start_automatic = TRUE
 
 	attachable_allowed = list( //give it some flexibility.
 		/obj/item/attachable/flashlight,
@@ -29,6 +28,12 @@
 	flags_gun_features = GUN_UNUSUAL_DESIGN|GUN_WIELDED_FIRING_ONLY|GUN_TRIGGER_SAFETY
 	gun_category = GUN_CATEGORY_HEAVY
 
+	//Pressure setting of the attached fueltank, controls how much fuel is used per tile
+	var/fuel_pressure = 1
+
+	//max range of flames that can fire, can change depending on fueling
+	var/max_range = 9
+
 
 /obj/item/weapon/gun/flamer/Initialize(mapload, spawn_empty)
 	. = ..()
@@ -51,7 +56,7 @@
 
 /obj/item/weapon/gun/flamer/set_gun_config_values()
 	..()
-	set_fire_delay(FIRE_DELAY_TIER_5 * 5)
+	set_fire_delay(FIRE_DELAY_TIER_11)
 
 /obj/item/weapon/gun/flamer/unique_action(mob/user)
 	toggle_gun_safety()