Bloodwatch

Your ship goes down in an unexpected storm and you wash ashore on an island with no name on any map. You watch from cover as a group of people beats someone to death. They see you watching. They start coming for you. You retreat to a lighthouse and take stock of what you have: a nightvision device, a backpack, and whatever you can find scattered across the island. Five types of weapons are hidden out there — a knife, an axe, a baseball bat, a handgun, and a crossbow. Ammo and arrows are scarce. The enemies are strong and work in groups. Find the cult leader. Deal with all of them. Find a way off this island.