Trying to find a campaign I played ages ago

[Colonel Aster]

A long while back I remember playing a campaign where you are basically this wizard that was send to fort "blackbird" to stop the demon invasion (or something of that nature). You are then decieved by a necromancer into believing that the fort has already fallen at which point you are persuade by a pit lord, then I believe you are trying to go to some "holy place" or something of that nature and you realize that the god of earth has put a price on your head, that's pretty much all I can remember