Due to a strange bug in the game (or several overlaysed), the game save file may be broken, and when you try to load the save, only a black screen will be displayed on the screen.
In order for you not to have 'New game' from the very beginning of the game, I compiled this mini-solution.

First you need download this archive with save files for key points of the game: https://drive.google.com/open?id=1x5G-OxJ3_nIX8LgPZbVz97ho0zNCdISy

And further on the points:
0.Open save game folder 'C:\Users\[User_name]\AppData\LocalLow\illius\Nordlicht'
1.*If there is no 'Nordlicht_0.save' file in the folder, then start the game, and click the 'New Game' button
(Otherwise, when you click 'Continue' in game, the loading will not start)
2.Delete broken save file 'Nordlicht_0.save'
3.Copy file 'Nordlicht_0 [Save_name].save' from this archive to save game folder
4.Rename file 'Nordlicht_0 [Save_name].save' to 'Nordlicht_0.save'
5.Open game and click 'Continue' button
...
PROFIT


Problems such as the one in the figure below are also resolved by replacing the save: