Sketchy on the Details

Sketchy on the Details is a side quest that can be acquired during Act 2 in Dragon Age II.

Acquisition
Go to Hightown during the day and head towards the Chantry. After you reach the Chantry go the Chantry Board and accept the request posted on it.

Walkthrough
You must eliminate different groups of assassins all over Kirkwall and then report to Sketch at the Docks during night time to tell him they are all dead. You will only receive quest updates upon the deaths of the first and last groups of assassins. The locations of the assassin groups are listed below:


 * Hightown - Night (Denerim Avengers) - in Hightown Square


 * Lowtown - Day (Antivan Assassins) - on stairs next to Elven Alienage


 * Gallows - Day (Qunari Death Squad) - in the south alcove east of the merchants


 * Hanged Man - Night (Rivaini Legendary Beards)


 * Darktown - Day (Carta Loyalists) - Abandoned Mining Tunnels


 * Final turn-in to Sketch - Docks (night)

Rewards
Sketch's Resplit-Shaft

Bugs

 * The quest seems to stay in the journal even after turning it in to Sketch simply saying "You took care of the foreign assassins" and Sketch will remain in the Docks with a quest marker over his head. However, you do still get the exp for the quest.
 * If the quest is not completed by Act 3, the assassins will show up as scripted, but Sketch will not appear, making it impossible to complete the quest.