Hey Oko,
Appreciate it, but I think that's the incorrect file.
Saves will look like "5-2-LT1.save". The first number of a save indicates their page number and the second the save slot itself. So 5-2-LT1.save would be the 5th page, and save slot #2.
Where your game folder is located, you'll have a "game" folder where the .exe is. Inside the "game" folder you'll have "saves".,
Example: C:\AHouseInTheRift-GameVersionHere\game\saves