fixes

code/modules/mob/living/simple_animal/hostile/megafauna/demonic_frost_miner.dm

@@ -31,9 +31,6 @@ Difficulty: Extremely Hard
 	wander = FALSE
 	del_on_death = TRUE
 	blood_volume = BLOOD_VOLUME_NORMAL
-	achievement_type = /datum/award/achievement/boss/demonic_miner_kill
-	crusher_achievement_type = /datum/award/achievement/boss/demonic_miner_crusher
-	score_achievement_type = /datum/award/score/demonic_miner_score
 	deathmessage = "falls to the ground, decaying into plasma particles."
 	deathsound = "bodyfall"
 	footstep_type = FOOTSTEP_MOB_HEAVY

code/modules/mob/living/simple_animal/hostile/megafauna/megafauna.dm

@@ -41,15 +41,37 @@
 	/// Next time fauna can use a melee attack
 	var/recovery_time = 0
 
+	var/true_spawn = TRUE // if this is a megafauna that should grant achievements, or have a gps signal
+	var/nest_range = 10
+	var/chosen_attack = 1 // chosen attack num
+	var/list/attack_action_types = list()
+	var/small_sprite_type
+
 /mob/living/simple_animal/hostile/megafauna/Initialize(mapload)
 	. = ..()
 	apply_status_effect(STATUS_EFFECT_CRUSHERDAMAGETRACKING)
 	ADD_TRAIT(src, TRAIT_NO_TELEPORT, MEGAFAUNA_TRAIT)
+	for(var/action_type in attack_action_types)
+		var/datum/action/innate/megafauna_attack/attack_action = new action_type()
+		attack_action.Grant(src)
+	if(small_sprite_type)
+		var/datum/action/small_sprite/small_action = new small_sprite_type()
+		small_action.Grant(src)
 
 /mob/living/simple_animal/hostile/megafauna/Destroy()
 	QDEL_NULL(internal)
 	. = ..()
 
+/mob/living/simple_animal/hostile/megafauna/Moved()
+	if(nest && nest.parent && get_dist(nest.parent, src) > nest_range)
+		var/turf/closest = get_turf(nest.parent)
+		for(var/i = 1 to nest_range)
+			closest = get_step(closest, get_dir(closest, src))
+		forceMove(closest) // someone teleported out probably and the megafauna kept chasing them
+		target = null
+		return
+	return ..()
+
 /mob/living/simple_animal/hostile/megafauna/death(gibbed)
 	if(health > 0)
 		return
@@ -140,3 +162,21 @@
 		SSmedals.SetScore(BOSS_SCORE, C, 1)
 		SSmedals.SetScore(score_type, C, 1)
 	return TRUE
+
+/datum/action/innate/megafauna_attack
+	name = "Megafauna Attack"
+	icon_icon = 'icons/mob/actions/actions_animal.dmi'
+	button_icon_state = ""
+	var/mob/living/simple_animal/hostile/megafauna/M
+	var/chosen_message
+	var/chosen_attack_num = 0
+
+/datum/action/innate/megafauna_attack/Grant(mob/living/L)
+	if(istype(L, /mob/living/simple_animal/hostile/megafauna))
+		M = L
+		return ..()
+	return FALSE
+
+/datum/action/innate/megafauna_attack/Activate()
+	M.chosen_attack = chosen_attack_num
+	to_chat(M, chosen_message)

code/modules/mob/living/simple_animal/hostile/megafauna/wendigo.dm

@@ -34,9 +34,6 @@ Difficulty: Hard
 	wander = FALSE
 	del_on_death = FALSE
 	blood_volume = BLOOD_VOLUME_NORMAL
-	achievement_type = /datum/award/achievement/boss/wendigo_kill
-	crusher_achievement_type = /datum/award/achievement/boss/wendigo_crusher
-	score_achievement_type = /datum/award/score/wendigo_score
 	deathmessage = "falls, shaking the ground around it"
 	deathsound = 'sound/effects/gravhit.ogg'
 	footstep_type = FOOTSTEP_MOB_HEAVY