paper skin, glass bones

code/__DEFINES/traits.dm

@@ -233,6 +233,8 @@
 #define TRAIT_TRASHCAN					"trashcan"
 ///Used for fireman carry to have mobe not be dropped when passing by a prone individual.
 #define TRAIT_BEING_CARRIED "being_carried"
+#define TRAIT_GLASS_BONES "glass_bones"
+#define TRAIT_PAPER_SKIN "paper_skin"
 
 // mobility flag traits
 // IN THE FUTURE, IT WOULD BE NICE TO DO SOMETHING SIMILAR TO https://github.com/tgstation/tgstation/pull/48923/files (ofcourse not nearly the same because I have my.. thoughts on it)

code/datums/traits/negative.dm

@@ -425,3 +425,21 @@ GLOBAL_LIST_EMPTY(family_heirlooms)
 	gain_text = "<span class='notice'>You can't smell anything!</span>"
 	lose_text = "<span class='notice'>You can smell again!</span>"
 	medical_record_text = "Patient suffers from anosmia and is incapable of smelling gases or particulates."
+
+/datum/quirk/paper_skin
+	name = "Paper Skin"
+	desc = "Your flesh is weaker, resulting in receiving cuts more easily."
+	value = -1
+	mob_trait = TRAIT_PAPER_SKIN
+	gain_text = "<span class='notice'>Your flesh feels weak!</span>"
+	lose_text = "<span class='notice'>Your flesh feels more durable!</span>"
+	medical_record_text = "Patient suffers from weak flesh, resulting in them receiving cuts far more easily."
+
+/datum/quirk/glass_bones
+	name = "Glass Bones"
+	desc = "Your bones are far more brittle, and more vulnerable to breakage."
+	value = -1
+	mob_trait = TRAIT_GLASS_BONES
+	gain_text = "<span class='notice'>Your bones feels weak!</span>"
+	lose_text = "<span class='notice'>Your bones feels more durable!</span>"
+	medical_record_text = "Patient suffers from brittle bones, resulting in them receiving breakages far more easily."

code/modules/surgery/bodyparts/_bodyparts.dm

@@ -228,6 +228,8 @@
 	var/mangled_state = get_mangled_state()
 	var/bio_state = owner.get_biological_state()
 	var/easy_dismember = HAS_TRAIT(owner, TRAIT_EASYDISMEMBER) // if we have easydismember, we don't reduce damage when redirecting damage to different types (slashing weapons on mangled/skinless limbs attack at 100% instead of 50%)
+	var/glass_bones = HAS_TRAIT(owner, TRAIT_GLASS_BONES)
+	var/paper_skin = HAS_TRAIT(owner, TRAIT_PAPER_SKIN)
 
 	if(wounding_type == WOUND_BLUNT)
 		if(sharpness == SHARP_EDGED)
@@ -242,9 +244,11 @@
 			if(wounding_type == WOUND_SLASH)
 				wounding_type = WOUND_BLUNT
 				wounding_dmg *= (easy_dismember ? 1 : 0.5)
+				wounding_dmg *= (glass_bones ? 1.5 : 1)
 			else if(wounding_type == WOUND_PIERCE)
 				wounding_type = WOUND_BLUNT
 				wounding_dmg *= (easy_dismember ? 1 : 0.75)
+				wounding_dmg *= (glass_bones ? 1.5 : 1)
 			if((mangled_state & BODYPART_MANGLED_BONE) && try_dismember(wounding_type, wounding_dmg, wound_bonus, bare_wound_bonus))
 				return
 		// if we're flesh only, all blunt attacks become weakened slashes in terms of wound damage
@@ -252,12 +256,17 @@
 			if(wounding_type == WOUND_BLUNT)
 				wounding_type = WOUND_SLASH
 				wounding_dmg *= (easy_dismember ? 1 : 0.5)
+				wounding_dmg *= (paper_skin ? 1.5 : 1)
 			if((mangled_state & BODYPART_MANGLED_FLESH) && try_dismember(wounding_type, wounding_dmg, wound_bonus, bare_wound_bonus))
 				return
 		// standard humanoids
 		if(BIO_FLESH_BONE)
 			// if we've already mangled the skin (critical slash or piercing wound), then the bone is exposed, and we can damage it with sharp weapons at a reduced rate
 			// So a big sharp weapon is still all you need to destroy a limb
+			if(wounding_type == WOUND_SLASH || wounding_type == WOUND_PIERCE)
+				wounding_dmg *= (paper_skin ? 1.5 : 1)
+			else
+				wounding_dmg *= (glass_bones ? 1.5 : 1)
 			if(mangled_state == BODYPART_MANGLED_FLESH && sharpness)
 				playsound(src, "sound/effects/wounds/crackandbleed.ogg", 100)
 				if(wounding_type == WOUND_SLASH && !easy_dismember)