I already downloaded the game awhile back, but since then there have been updates such as the nightmare mode. do i have to re purchase the game to get those updates?
I think so. Because if you use DEMO its just a trail to try the main game not any other modes. But if you paid otherwise I don't know sorry
Go back to the download page you got after purchasing and you can redownload the updated version from there.
if you bought the game once you don’t have to again. Someone else already detailed the steps it seems :)
