Hi
[spoiler]
I'm having trouble to get the good ending where the warrior gives his brain to the Calculator. I already got the 3 other endings.
The problem is that my reputation is: Demon Spawn.
[/spoiler]
I'm looking for a save editor to change the reputation of my character (I already tried BOS-Edit, but it doesn't work in GOG version).

I'm not sure there's one, that'll work (especially when you used mods).
But you can always watch the ending on video if you like:
http://www.youtube.com/watch?v=nf0BFA2QgZA

Still, there's this little tool Poke, the Swiss Army knife of cheating.
http://codefromthe70s.org/poke.aspx
You basically alter the rep variable while loaded in RAM. The only difficulty is finding it. Therefore it's necessary to change your rep in-game, meaning you have to do something that regularly changes your rep (the easiest might be something bad ;-) Poke tracks all loaded variables and searches for the before and after value to identify the right one. For details please check the Poke documentation.

I want to record the ending for the walkthrough I'm doing. Thanks. I tried using this, but for some reason, it doesn't detect Fallout Tactics. Is there any way to add the program to the list?
Or maybe you know of a similar program I can try?

Thanks for the help!

You're very welcome, almabrds.