15 Video Game Bosses That Keep Coming Back For More

The Alien – Alien Isolation

Besides the androids that waddle about the ship, the Alien is the only true enemy in Alien Isolation. But because of this, the leathery exoskeleton of the Xenomorph relentlessly pursues you, sniffing you out and sinking its rows of teeth into you. It’s a constant presence as you work your way through the desolate husk of the Sevastopol.