Working on some suit bugs, attempted to fix the welding overlay issue with no success.

code/game/objects/items.dm

@@ -661,7 +661,7 @@ modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 		usr << "You are unable to focus through the [devicename]"
 		cannotzoom = 1
 	else if(!zoom && global_hud.darkMask[1] in usr.client.screen)
-		usr << "Your welding equipment gets in the way of you looking through the [devicename]"
+		usr << "Your visor gets in the way of looking through the [devicename]"
 		cannotzoom = 1
 	else if(!zoom && usr.get_active_hand() != src)
 		usr << "You are too distracted to look through the [devicename], perhaps if it was in your active hand this might work better"

code/modules/clothing/clothing.dm

@@ -254,31 +254,31 @@ BLIND     // can't see anything
 
 /obj/item/clothing/head/attack_self(mob/user)
 	if(brightness_on)
-
 		if(!isturf(user.loc))
 			user << "You cannot turn the light on while in this [user.loc]" //To prevent some lighting anomalities.
 			return
-
 		on = !on
-
-		overlays.Cut()
+		update_icon()
 		if(on)
-			if(!light_overlay_cache["[light_overlay]_icon"])
-				light_overlay_cache["[light_overlay]_icon"] = image("icon" = 'icons/obj/light_overlays.dmi', "icon_state" = "[light_overlay]")
-			if(!light_overlay_cache["[light_overlay]"])
-				light_overlay_cache["[light_overlay]"] = image("icon" = 'icons/mob/light_overlays.dmi', "icon_state" = "[light_overlay]")
-			overlays |= light_overlay_cache["[light_overlay]_icon"]
 			user.SetLuminosity(user.luminosity + brightness_on)
 		else
 			user.SetLuminosity(user.luminosity - brightness_on)
-
-		if(istype(user,/mob/living/carbon/human))
-			var/mob/living/carbon/human/H = user
-			H.update_inv_head()
-
 	else
 		return ..(user)
 
+/obj/item/clothing/head/update_icon(var/mob/user)
+
+	overlays.Cut()
+	if(on)
+		if(!light_overlay_cache["[light_overlay]_icon"])
+			light_overlay_cache["[light_overlay]_icon"] = image("icon" = 'icons/obj/light_overlays.dmi', "icon_state" = "[light_overlay]")
+		if(!light_overlay_cache["[light_overlay]"])
+			light_overlay_cache["[light_overlay]"] = image("icon" = 'icons/mob/light_overlays.dmi', "icon_state" = "[light_overlay]")
+		overlays |= light_overlay_cache["[light_overlay]_icon"]
+	if(istype(user,/mob/living/carbon/human))
+		var/mob/living/carbon/human/H = user
+		H.update_inv_head()
+
 /obj/item/clothing/head/proc/update_light(mob/user)
 
 	if(!brightness_on)

code/modules/clothing/spacesuits/rig/rig.dm

@@ -204,13 +204,14 @@
 		if(!M)
 			failed_to_seal = 1
 		else
-			for(var/list/piece_data in list(list(M.shoes,boots,"boots"),list(M.gloves,gloves,"gloves"),list(M.head,helmet,"helmet"),list(M.wear_suit,chest,"chest")))
+			for(var/list/piece_data in list(list(M.shoes,boots,"boots",boot_type),list(M.gloves,gloves,"gloves",glove_type),list(M.head,helmet,"helmet",helm_type),list(M.wear_suit,chest,"chest",chest_type)))
 
 				var/obj/item/piece = piece_data[1]
 				var/obj/item/compare_piece = piece_data[2]
 				var/msg_type = piece_data[3]
+				var/piece_type = piece_data[4]
 
-				if(!piece)
+				if(!piece || !piece_type)
 					continue
 
 				if(!istype(M) || !istype(piece) || !istype(compare_piece) || !msg_type)

code/modules/clothing/spacesuits/rig/suits/alien.dm

@@ -16,4 +16,4 @@
 	icon_state = "breacher_rig"
 	armor = list(melee = 90, bullet = 90, laser = 90, energy = 90, bomb = 90, bio = 100, rad = 80)
 	vision_restriction = 0
-	offline_vision_restriction = 2
+	slowdown = 4

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

@@ -1245,7 +1245,7 @@
 			if(copytext(hud.icon_state,1,4) == "hud") //ugly, but icon comparison is worse, I believe
 				client.images.Remove(hud)
 
-		client.screen.Remove(global_huds)
+		client.screen -= global_huds
 
 		update_action_buttons()
 
@@ -1484,20 +1484,23 @@
 			if(eye_blurry)			client.screen += global_hud.blurry
 			if(druggy)				client.screen += global_hud.druggy
 
-			var/masked = 0
-
-			if(!masked && istype(glasses, /obj/item/clothing/glasses/welding))
-				var/obj/item/clothing/glasses/welding/O = glasses
-				if(!O.up && tinted_weldhelh)
+			if(tinted_weldhelh)
+				var/found_welder
+				if(istype(glasses, /obj/item/clothing/glasses/welding))
+					var/obj/item/clothing/glasses/welding/O = glasses
+					if(!O.up)
+						found_welder = 1
+				else if(istype(head, /obj/item/clothing/head/welding))
+					var/obj/item/clothing/head/welding/O = head
+					if(!O.up)
+						found_welder = 1
+				else if(istype(back, /obj/item/weapon/rig))
+					var/obj/item/weapon/rig/O = back
+					if(O.helmet && O.helmet == head && (O.helmet.body_parts_covered & EYES))
+						if((O.offline && O.offline_vision_restriction == 1) || (!O.offline && O.vision_restriction == 1))
+							found_welder = 1
+				if(found_welder)
 					client.screen |= global_hud.darkMask
-					masked = 1
-
-			if(!masked && istype(back, /obj/item/weapon/rig))
-				var/obj/item/weapon/rig/O = back
-				// Ugh, why is this done on a case by case basis? Why is there no flag for causing weldervision?
-				if(O.helmet && O.helmet == head && (O.helmet.body_parts_covered & EYES))
-					if((O.offline && O.offline_vision_restriction == 1) || (!O.offline && O.vision_restriction == 1))
-						client.screen |= global_hud.darkMask
 
 			if(machine)
 				if(!machine.check_eye(src))