add missing uniqe flags

game/modules/tome/data/zones/charred-scar/npcs.lua

@@ -268,6 +268,7 @@ newEntity{
 }
 
 newEntity{ base = "BASE_NPC_FAEROS", define_as = "FYRK",
+	unique=true,
 	allow_infinite_dungeon = true,
 	name = "Fyrk, Faeros High Guard", color=colors.VIOLET,
 	resolvers.nice_tile{image="invis.png", add_mos = {{image="npc/elemental_fire_fyrk__faeros_high_guard.png", display_h=2, display_y=-1}}},

game/modules/tome/data/zones/last-hope-graveyard/npcs.lua

@@ -27,6 +27,7 @@ local Talents = require("engine.interface.ActorTalents")
 
 newEntity{ define_as = "CELIA",
 	name = "Celia",
+	unique = true,
 	type = "humanoid", subtype = "human", image = "npc/humanoid_human_celia.png",
 	female = true,
 	display = "p", color=colors.GREY,

game/modules/tome/data/zones/maze/npcs.lua

@@ -143,6 +143,7 @@ newEntity{ define_as = "MINOTAUR_MAZE",
 }
 
 newEntity{ base = "BASE_NPC_SPIDER", define_as = "NIMISIL",
+	unique = true,
 	allow_infinite_dungeon = true,
 	name = "Nimisil", color=colors.VIOLET,
 	desc = [[Covered by eerie luminescent growths and protuberances, this spider now haunts the maze's silent passageways.]],