I'm really curious how the game would play out
Okay, so since the council of SGS is dead, I wasn't able talk to them to end the game properly. The only choice was to board the train to North Underrail. Was surprised to see the Gunslinger greeting me by the train (he's the only character I decided to spare). I chose to leave with him. One of the ending slides specifically states that we might cooperate once again some time.
Overall, the game doesn't seem to react to me genociding the whole game world. Ending slides talk like important characters are still alive (the Oligarchs, Vera, Azif, etc.). The only deaths mentioned are of the characters that can die during quests (Gorsky, Camp Hathor leader).
The game also thinks that Free Drones successfully destroyed the Epione Lab elevator and assaulted the Junkyard. No, they didn't, I gassed them. So the trigger for this ending is just killing the Protectorate troops guarding the Junkyard elevator it seems.
Ending also mentioned that «piracy was suppressed, and thus Junkyard's trade flourished». Not sure what that's all about. Perhaps it was caused by me killing everyone in the Rig/Grim Jetters camp? I don't see any mentions of this ending on the wiki.
Also yeah, flourishing trade my ass. The whole town is nothing but corpses.
The Black Sea expedition ending is also weird. I killed Serpentborn and Magnar first, then the pirates, and then all of the Aeigis troops. After that the camp changed to look like it was captured by Sormibaren with burning piles of bodies and natives everywhere (even despite the fact I killed them all). And the ending said that «pirates made their final blow to the expedition». Wtf?
Btw, I genuinly laughed at the fact that coffins for dead troopers appear in real time while you are slaughtering them.
I also think it's giga decline that even if you killed the Faceless commander and decided to keep the Cube for yourself, you get cucked by Six and have the Cube taken from you anyway.