Samus Aran and the Alienator are both interplanetary female bounty hunters whose armour includes a laser cannon that encases their right hand and forearm.
Female protagonist; rocky planet; aliens that eat your head; an organisation that plans to use the aliens as bioweapons; miniboss called Ridley (Ridley Scott was the director of Alien); boss called Mother Brain (Mother was the ship's computer in Alien); countdown and self-destruct at the end