You were assigned to reach the crystal. However, at the end, Sebastian kills you. You revive, and try to do it again.

Sebastian is surprised once you get back at him again, and decides to keep doing it until YOU give up. Or does it change?

After some time, Sebastian is visibly getting more desperate as he takes more damage, eventually trying to retreat. You don't accept it as mercy, and continue dealing damage to him. Eventually it reaches to a point it's you in his hideout standing above him, about to finish Sebastian off, and him lying on the floor, rambling and crying, calling for his mother.

Sebastian: "M-mom... a-are you there?..."

You freeze while panting, surprised he would say anything like this. Kill, let him bleed out, or something else...?