Warning => Full of spoilers
I'm to the point sticking to 3 factions (Rebellion, People and The Mask),
I've already explored the facility during the Giant quest and left Sitenero alone (I was able to talk to him in this encounter, but left with a save before talking to him).
Now i'm back with more levels and those quests: (FR language)
- La dernière mission (Rebellion)
- Les prisonniers (People)
- Le Tyran (The Mask)
I can't talk to Sitenero anymore (dialog is not triggered), I can only manually kill him to validate the Rebellion quest (wich is not my choice)
Here is a link to my savegame: Savegame - Sitenero
Hope this will help.
Living the dream