Story related achievement...
*** Spoiler - click to reveal ***You'll control Lord Ethan playing hide and seek with your brothers. After a few dialogues, you'll be warned about Lord Whitehill, who has arrived unexpected and unannounced. Go to meet him as your duty as new lord. Assume your role and confront the Gared family's assassin and the angry Lord Whitehill. Tell him that Gared is not longer there and was send to the Wall. Either you choose to blame Royland, Duncan, or yourself he will demand justice; Lady Elissa will calm Whitehill's mood with her presence and make him leave.