Assassination is less likely at lower threats.

code/controllers/configuration/entries/dynamic.dm

@@ -78,6 +78,9 @@
 /datum/config_entry/number/dynamic_glorious_death_cost
 	config_entry_value = 5
 
+/datum/config_entry/number/dynamic_assassinate_cost
+	config_entry_value = 2
+
 /datum/config_entry/number/dynamic_summon_guns_requirement
 	config_entry_value = 10
 	min_val = 0

code/modules/antagonists/traitor/datum_traitor.dm

@@ -159,7 +159,18 @@
 
 /datum/antagonist/traitor/proc/forge_single_human_objective() //Returns how many objectives are added
 	.=1
-	if(prob(50))
+	var/assassin_prob = 50
+	var/is_dynamic = FALSE
+	var/datum/game_mode/dynamic/mode
+	if(istype(SSticker.mode,/datum/game_mode/dynamic))
+		mode = SSticker.mode
+		is_dynamic = TRUE
+		assassin_prob = mode.threat_level*(2/3)
+	if(prob(assassin_prob))
+		if(is_dynamic)
+			var/threat_spent = CONFIG_GET(number/dynamic_assassinate_cost)
+			spend_threat(threat_spent)
+			mode.log_threat("[owner.name] spent [threat_spent] on an assassination target.")
 		var/list/active_ais = active_ais()
 		if(active_ais.len && prob(100/GLOB.joined_player_list.len))
 			var/datum/objective/destroy/destroy_objective = new

config/dynamic_config.txt

@@ -276,6 +276,8 @@ DYNAMIC_HIJACK_COST 10
 
 DYNAMIC_GLORIOUS_DEATH_COST 5
 
+DYNAMIC_ASSASSINATE_COST 2
+
 ## Dynamic wizard stuff
 
 ## How much threat level is required to buy summon guns. Setting to 0 makes it always available.