Oh. That's what was missing. (#3143)

Boop.

code/game/gamemodes/cult/cult_structures.dm

@@ -100,9 +100,10 @@
 	if(cooldowntime > world.time)
 		to_chat(user, "<span class='cultitalic'>The magic in [src] is weak, it will be ready to use again in [DisplayTimeText(cooldowntime - world.time)].</span>")
 		return
-	var/choice = alert(user,"You study the schematics etched into the forge...",,"Shielded Robe","Flagellant's Robe","Bastard Sword")
+	var/option = "Shielded Robe"
+	option = input(user, "You study the schematics etched into the forge...", "[src]", option) as null|anything in list("Shielded Robe", "Flagellant's Robe", "Bastard Sword", "Nar-Sien Hardsuit")
 	var/pickedtype
-	switch(choice)
+	switch(option)
 		if("Shielded Robe")
 			pickedtype = /obj/item/clothing/suit/hooded/cultrobes/cult_shield
 		if("Flagellant's Robe")
@@ -115,6 +116,9 @@
 				to_chat(user, "<span class='cultitalic'>The forge fires are not yet hot enough for this weapon, give it another [DisplayTimeText(cooldowntime)].</span>")
 				cooldowntime = 0
 				return
+		if("Nar-Sien Hardsuit")
+			pickedtype = /obj/item/clothing/suit/space/hardsuit/cult
+
 	if(src && !QDELETED(src) && anchored && pickedtype && Adjacent(user) && !user.incapacitated() && iscultist(user) && cooldowntime <= world.time)
 		cooldowntime = world.time + 2400
 		var/obj/item/N = new pickedtype(get_turf(src))