Your investigation into missing people case has lead you to residence of cult of Chernobog. Something very wrong and weird is happening here. Evil powers seam to be crossing into our world.
Wander cult residency full of secrets, depression and things better unseen.
Trebishe is merciless place. You'll bleed, go insane, lose limbs, suffer physical trama, will be poisoned, crawl through human remains, ...
Make sacrifices to gods to enhance your abilities and gain priceless artefact that lend you godly powers such as telekinesis, throwing lighting and many others. Or enhance yourself the old fashioned way - by taking copious amounts of drugs.