OK MAYBE NOT INDESTRUCTIBLE

OK

code/modules/mining/lavaland/necropolis_chests.dm

@@ -325,7 +325,7 @@
 	icon = 'icons/obj/lavaland/artefacts.dmi'
 	icon_state = "memento_mori"
 	actions_types = list(/datum/action/item_action/hands_free/memento_mori)
-	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
+	resistance_flags = LAVA_PROOF | FIRE_PROOF | ACID_PROOF
 	var/mob/living/carbon/human/active_owner
 
 /obj/item/clothing/neck/necklace/memento_mori/item_action_slot_check(slot, mob/user, datum/action/A)
@@ -760,7 +760,7 @@
 /obj/item/melee/transforming/cleaving_saw
 	name = "cleaving saw"
 	desc = "This saw, effective at drawing the blood of beasts, transforms into a long cleaver that makes use of centrifugal force."
-	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
+	resistance_flags = LAVA_PROOF | FIRE_PROOF | ACID_PROOF
 	force = 12
 	force_on = 20 //force when active
 	throwforce = 20
@@ -1027,7 +1027,6 @@
 /obj/item/lava_staff
 	name = "staff of lava"
 	desc = "The ability to fill the emergency shuttle with lava. What more could you want out of life?"
-	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
 	icon_state = "staffofstorms"
 	item_state = "staffofstorms"
 	lefthand_file = 'icons/mob/inhands/weapons/staves_lefthand.dmi'
@@ -1179,7 +1178,7 @@
 /obj/item/gun/ballistic/revolver/doublebarrel/super
 	name = "super combat shotgun"
 	desc = "From the belly of the beast - or rather, demon. Twice as lethal as a less-than-super shotgun, but a tad bulkier."
-	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
+	resistance_flags = LAVA_PROOF | FIRE_PROOF | ACID_PROOF
 	icon_state = "heckgun"
 	slot_flags = null
 	mag_type = /obj/item/ammo_box/magazine/internal/shot/dual/heck
@@ -1210,7 +1209,7 @@
 /obj/item/hierophant_club
 	name = "hierophant club"
 	desc = "The strange technology of this large club allows various nigh-magical feats. It used to beat you, but now you can set the beat."
-	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
+	resistance_flags = LAVA_PROOF | FIRE_PROOF | ACID_PROOF
 	icon_state = "hierophant_club_ready_beacon"
 	item_state = "hierophant_club_ready_beacon"
 	icon = 'icons/obj/lavaland/artefacts.dmi'