diff --git a/code/_compile_options.dm b/code/_compile_options.dm
index f25f39ab2b..61b66e90bc 100644
--- a/code/_compile_options.dm
+++ b/code/_compile_options.dm
@@ -15,7 +15,7 @@
 //#define REFERENCE_TRACKING
 #ifdef REFERENCE_TRACKING
 
-///alternate to reftracking, extool variant
+///alternate to reftracking, extool variant (outdated, EoL, doesn't work, should be removed)
 //#define EXTOOLS_REFERENCE_TRACKING
 
 ///Should we be logging our findings or not
diff --git a/code/_onclick/hud/radial.dm b/code/_onclick/hud/radial.dm
index 77ee24b1ed..a582c372e1 100644
--- a/code/_onclick/hud/radial.dm
+++ b/code/_onclick/hud/radial.dm
@@ -9,6 +9,12 @@ GLOBAL_LIST_EMPTY(radial_menus)
 	plane = ABOVE_HUD_PLANE
 	var/datum/radial_menu/parent
 
+/atom/movable/screen/radial/Destroy()
+	if(parent)
+		parent.elements -= src
+		UnregisterSignal(parent, COMSIG_PARENT_QDELETING)
+	. = ..()
+
 /atom/movable/screen/radial/proc/set_parent(new_value)
 	if(parent)
 		UnregisterSignal(parent, COMSIG_PARENT_QDELETING)
@@ -60,6 +66,11 @@ GLOBAL_LIST_EMPTY(radial_menus)
 	if(usr.client == parent.current_user)
 		parent.finished = TRUE
 
+/atom/movable/screen/radial/center/Destroy()
+	if(parent)
+		parent.close_button = null
+	return ..()
+
 /datum/radial_menu
 	var/list/choices = list() //List of choice id's
 	var/list/choices_icons = list() //choice_id -> icon
@@ -292,6 +303,7 @@ GLOBAL_LIST_EMPTY(radial_menus)
 		stoplag(1)
 
 /datum/radial_menu/Destroy()
+	QDEL_LIST(elements)
 	Reset()
 	hide()
 
diff --git a/code/_rendering/atom_huds/atom_hud.dm b/code/_rendering/atom_huds/atom_hud.dm
index 9cdf277c5f..151ebc8a24 100644
--- a/code/_rendering/atom_huds/atom_hud.dm
+++ b/code/_rendering/atom_huds/atom_hud.dm
@@ -55,11 +55,14 @@ GLOBAL_LIST_INIT(huds, list(
 	GLOB.all_huds -= src
 	return ..()
 
-/datum/atom_hud/proc/remove_hud_from(mob/M)
+/datum/atom_hud/proc/remove_hud_from(mob/M, absolute = FALSE)
 	if(!M || !hudusers[M])
 		return
-	if (!--hudusers[M])
+	if(absolute || !--hudusers[M])
+		UnregisterSignal(M, COMSIG_PARENT_QDELETING)
 		hudusers -= M
+		if(next_time_allowed[M])
+			next_time_allowed -= M
 		if(queued_to_see[M])
 			queued_to_see -= M
 		else
@@ -85,6 +88,7 @@ GLOBAL_LIST_INIT(huds, list(
 		return
 	if(!hudusers[M])
 		hudusers[M] = 1
+		RegisterSignal(M, COMSIG_PARENT_QDELETING, .proc/unregister_mob)
 		if(next_time_allowed[M] > world.time)
 			if(!queued_to_see[M])
 				addtimer(CALLBACK(src, .proc/show_hud_images_after_cooldown, M), next_time_allowed[M] - world.time)
@@ -96,6 +100,10 @@ GLOBAL_LIST_INIT(huds, list(
 	else
 		hudusers[M]++
 
+/datum/atom_hud/proc/unregister_mob(datum/source, force)
+	SIGNAL_HANDLER
+	remove_hud_from(source, TRUE)
+
 /datum/atom_hud/proc/show_hud_images_after_cooldown(M)
 	if(queued_to_see[M])
 		queued_to_see -= M
diff --git a/code/datums/mind.dm b/code/datums/mind.dm
index ac0d5d84f5..2abf605ea1 100644
--- a/code/datums/mind.dm
+++ b/code/datums/mind.dm
@@ -96,12 +96,8 @@
 
 /datum/mind/Destroy()
 	SSticker.minds -= src
-	if(islist(antag_datums))
-		for(var/i in antag_datums)
-			var/datum/antagonist/antag_datum = i
-			if(antag_datum.delete_on_mind_deletion)
-				qdel(i)
-		antag_datums = null
+	QDEL_LIST(antag_datums)
+	QDEL_NULL(language_holder)
 	QDEL_NULL(skill_holder)
 	set_current(null)
 	soulOwner = null
diff --git a/code/datums/wounds/_wounds.dm b/code/datums/wounds/_wounds.dm
index a2c4a70380..9b1a912f49 100644
--- a/code/datums/wounds/_wounds.dm
+++ b/code/datums/wounds/_wounds.dm
@@ -80,7 +80,7 @@
 
 	/// What kind of scars this wound will create description wise once healed
 	var/scar_keyword = "generic"
-	/// If we've already tried scarring while removing (since remove_wound calls qdel, and qdel calls remove wound, .....) TODO: make this cleaner
+	/// If we've already tried scarring while removing (remove_wound can be called twice in a del chain, let's be nice to our code yeah?) TODO: make this cleaner
 	var/already_scarred = FALSE
 	/// If we forced this wound through badmin smite, we won't count it towards the round totals
 	var/from_smite
@@ -89,8 +89,7 @@
 	var/wound_flags = (FLESH_WOUND | BONE_WOUND | ACCEPTS_GAUZE)
 
 /datum/wound/Destroy()
-	if(limb?.wounds && (src in limb.wounds)) // destroy can call remove_wound() and remove_wound() calls qdel, so we check to make sure there's anything to remove first
-		remove_wound()
+	remove_wound()
 	limb = null
 	victim = null
 	return ..()
diff --git a/code/datums/wounds/slash.dm b/code/datums/wounds/slash.dm
index 68740e78ab..02e3db3070 100644
--- a/code/datums/wounds/slash.dm
+++ b/code/datums/wounds/slash.dm
@@ -35,12 +35,24 @@
 	if(old_wound)
 		blood_flow = max(old_wound.blood_flow, initial_flow)
 		if(old_wound.severity > severity && old_wound.highest_scar)
-			highest_scar = old_wound.highest_scar
-			old_wound.highest_scar = null
+			set_highest_scar(old_wound.highest_scar)
+			old_wound.clear_highest_scar()
 
 	if(!highest_scar)
-		highest_scar = new
-		highest_scar.generate(limb, src, add_to_scars=FALSE)
+		var/datum/scar/new_scar = new
+		set_highest_scar(new_scar)
+		new_scar.generate(limb, src, add_to_scars=FALSE)
+
+/datum/wound/slash/proc/set_highest_scar(datum/scar/new_scar)
+	if(highest_scar)
+		UnregisterSignal(highest_scar, COMSIG_PARENT_QDELETING)
+	if(new_scar)
+		RegisterSignal(new_scar, COMSIG_PARENT_QDELETING, .proc/clear_highest_scar)
+	highest_scar = new_scar
+
+/datum/wound/slash/proc/clear_highest_scar(datum/source)
+	SIGNAL_HANDLER
+	set_highest_scar(null)
 
 /datum/wound/slash/remove_wound(ignore_limb, replaced)
 	if(!replaced && highest_scar)
diff --git a/code/game/objects/effects/proximity.dm b/code/game/objects/effects/proximity.dm
index 5c477501f4..26069d4255 100644
--- a/code/game/objects/effects/proximity.dm
+++ b/code/game/objects/effects/proximity.dm
@@ -109,6 +109,7 @@
 		return INITIALIZE_HINT_QDEL
 
 /obj/effect/abstract/proximity_checker/Destroy()
+	LAZYREMOVE(monitor.checkers, src)
 	monitor = null
 	return ..()
 
diff --git a/code/game/objects/structures/beds_chairs/bed.dm b/code/game/objects/structures/beds_chairs/bed.dm
index 8f5e1c5079..62312e9099 100644
--- a/code/game/objects/structures/beds_chairs/bed.dm
+++ b/code/game/objects/structures/beds_chairs/bed.dm
@@ -185,7 +185,7 @@
 	anchored = FALSE
 	buildstacktype = /obj/item/stack/sheet/mineral/wood
 	buildstackamount = 10
-	var/mob/living/owner = null
+	var/owned = FALSE
 
 /obj/structure/bed/dogbed/ian
 	desc = "Ian's bed! Looks comfy."
@@ -208,9 +208,12 @@
 	anchored = TRUE
 
 /obj/structure/bed/dogbed/proc/update_owner(mob/living/M)
-	owner = M
+	if(owned || type != /obj/structure/bed/dogbed) //Only marked beds work
+		return FALSE //Failed
+	owned = TRUE
 	name = "[M]'s bed"
 	desc = "[M]'s bed! Looks comfy."
+	return TRUE //Let any callers know that this bed is ours now
 
 /obj/structure/bed/dogbed/buckle_mob(mob/living/M, force, check_loc)
 	. = ..()
diff --git a/code/modules/mining/lavaland/necropolis_chests.dm b/code/modules/mining/lavaland/necropolis_chests.dm
index db7f586642..7a53be231b 100644
--- a/code/modules/mining/lavaland/necropolis_chests.dm
+++ b/code/modules/mining/lavaland/necropolis_chests.dm
@@ -390,7 +390,7 @@
 /obj/item/wisp_lantern/Destroy()
 	if(wisp)
 		if(wisp.loc == src)
-			qdel(wisp)
+			QDEL_NULL(wisp)
 		else
 			wisp.visible_message("<span class='notice'>[wisp] has a sad feeling for a moment, then it passes.</span>")
 	return ..()
diff --git a/code/modules/mob/dead/observer/observer.dm b/code/modules/mob/dead/observer/observer.dm
index e5adf8229a..3d0361ca69 100644
--- a/code/modules/mob/dead/observer/observer.dm
+++ b/code/modules/mob/dead/observer/observer.dm
@@ -155,6 +155,8 @@ GLOBAL_VAR_INIT(observer_default_invisibility, INVISIBILITY_OBSERVER)
 	addtimer(CALLBACK(src, /atom/proc/update_atom_colour), 10)
 
 /mob/dead/observer/Destroy()
+	if(data_huds_on)
+		remove_data_huds()
 	GLOB.ghost_images_default -= ghostimage_default
 	QDEL_NULL(ghostimage_default)
 
diff --git a/code/modules/mob/living/simple_animal/friendly/dog.dm b/code/modules/mob/living/simple_animal/friendly/dog.dm
index e4d042a4cc..45a3532359 100644
--- a/code/modules/mob/living/simple_animal/friendly/dog.dm
+++ b/code/modules/mob/living/simple_animal/friendly/dog.dm
@@ -91,8 +91,7 @@
 	. = ..()
 	var/dog_area = get_area(src)
 	for(var/obj/structure/bed/dogbed/D in dog_area)
-		if(!D.owner)
-			D.update_owner(src)
+		if(D.update_owner(src)) //No muscling in on my turf you fucking parrot
 			break
 
 /mob/living/simple_animal/pet/dog/corgi/Initialize(mapload)