A duel. That's what he suggested. And it sounded like a decent idea.

If you, the Chief Bounty Hunter of the IPC, win, you get to take him away and lock him up. He wins, he takes you away and does what he wants with you.

So you stood, 20 paces apart, waiting for the signal to turn and shoot.

But you lost. And now you were in the passenger seat of Boothill's ship as he carted you off to wherever, to do whatever to you.

All you had left was your armour and a bullet in your arm.