Arthur would’ve probably killed Colm personally or held him ransom for Dutch to deal with, Kieran would’ve probably still stayed with gang in fear of the remaining O’Driscolls roaming about.

Also, Kieran would still be alive since the attack on Shady Belle was orchestrated by Colm himself.

@Catcher Wongus For the most part I agree with you boah, but I could see Colm mouthing off and either John or Bill putting a bullet in his head and Arthuer showing the body to Dutch

The game would be a lot shorter.

Colm didn't have as much impact on the game as I assumed he might've, so I don't think much would've changed if they wrapped up that end much quicker.

Gathering the information about Colm, Colm would surrender, but he would try to convince them not to kill him for his own safety. Knowing the fact that Colm doesn't give a crap about his gang, he would sacrifice them for his own survival.

The way I see it, Colm tries to bribe them with money, especially to convince them to turn against Dutch, but they will refuse regardless.

If it comes down to Colm's death, I think that the 4 (Arthur, John, Bill and Kieran) would just shoot him simultaneously or Arthur would knock him out and take him to camp, where Dutch would kill him personally for Annabelle's death. I personally think that the second option would been something that Dutch would do.

If it was canon, the outcome would been this: With Colm dead, the O'Driscolls would been either disbanded or were wiped out by the Van Der Linde Gang and Kieran would have survived for a long time.