I have some very good news!!! Finaly i got Cryostasis to work!!! And did you know what was the cause of the ntdll..error??
It was the sound Card!
I change the sound card accelaration to basic accelaration and the game started without any errors!!! But before i start playing the game i want you to give me some advice on how i can play the game without crashes, bugs and the best perofamnce possible!!