Mud Lurker

Twelve stages on a drowning island. Land by boat, free the hostages, raise a shack and hold it through the night, then fight your way to the jetty at dawn, while the flood rises and never falls. One hit kills, both ways. Your men are named and permanent: lose one and he is gone for good. Something lives in the rivers, and she cannot be killed, only driven off. Start suppressed and go loud when you dare. Top-down pixel action, mouse and keys.