Follow the steps below:

1. First you have to find the file to edit.
Go to: C: \ User \ UserName \ AppData \ Roaming \ Bioshock2 or on my machine (on windows 10), the path is following:
C:\Users\YOUR USERNAME\AppData\Roaming\BioshockHD\Bioshock2
or as in the picture below:











2. Make the backup of the Notepad. Just in case.

3. Open ''User.ini'' with Notepad

4. Search for "NumPad0=". Then add ''ToggleHud'' next to it. It will look like this:
NumPad0=ToggleHud
In my case there were many lines with ''NumPad0=''. But I chose the 1st from above and changed only that line for everything to work.

5. Save the file as an ''.ini'' file

6. In the ''properties'' of the file, check the box so it becomes "read only".

Now all you have to do is start the game.

Note: In the game press the "0" key to hide / show the HUD.

https://steamproxy.net/sharedfiles/filedetails/?id=1888959471
https://steamproxy.net/sharedfiles/filedetails/?id=1888969161
https://steamproxy.net/sharedfiles/filedetails/?id=1893405725