Weeping Ark

When wandering alone on the Arks, you don't want to encounter these: the Army of the Damned.

This mods adds the damned, a set of vicious monsters that, much like certain known fantasy creatures, can only move when not being observed. Capable of giving a fun challenge to your games. And perhaps, maybe you find the secret to defeating them, getting rewarded, and making you the monster that hunts them instead!