I'm happy that you also interested in The End of The Sun :) Even if you know nothing, you probably now The Witcher 3 that was highly based on slavic culture and mythology, I would say most of creatures there are from slavic myths. But overall our game is story driven game, so probably will be good for anyone who likes good story / myster / puzzle and detective games :)
I could give you access to full quality soundtrack too ;) As first purchaser.