Save - "Absolute Nightmare" difficulty for a Steam license, no cheats. The archive contains a save with a fully completed game. You can choose any level. Not everything is collected, not all secrets found, not all tests completed. But you can finish everything if anyone wants (I will do it later, when I want to return to DUM again). This is only the first version of the save, I plan to upload 100% later.

Throw the folder in:
C:\Program Files (x86)\Steam\userdata\*USER ID*\3017860\remote

If it doesn't work, rename the "game_duration.dat" file in the [GAME-AUTOSAVE] folder to the name on your Steam save.

Author: kelsh