Assume command of the Order.

This is the de facto 'Good' ending and can be achieved by performing high morality actions such as not killing civilians or surrendering enemies and by releasing captured NPCs.

If you follow the requirements for "Duke", "Damir" and "Alyosha", and subsequently "Full Strength", this achievement will unlock along with "Full Strength" at the end of the game as they are all unlocked for performing high morality actions throughout their relative levels.