Initial release for Amnesia: Delightful Decay Nightmare Mode. This is a challenge mode with accordance to the original Amnesia: Delightful Decay.
Nightmare mode of Delightful Decay involves a more harder version of the initial game which includes more difficult enemy encounters as well as no checkpoints. This means that if you die once in the game, you have to restart all the way from the beginning. Gives the game a more realistic approach and is not recommended for first time players of either Amnesia: The Dark Descent or Amnesia: Delightful Decay.
Enjoy! And do make sure NOT to die here and there. :)