Sicarian Ruststalkers. Material: Plastic. Factions: Imperium Armies. (Unpainted) (Assembled) -- Sicarian Ruststalkers are ruthless assassins and highly-skilled combatants that excel at infiltrating enemy lines and swiftly eliminating key targets. Armed with razor-sharp blades and a range of deadly weapons, these stealthy units are a force to be reckoned with on the battlefield.