Memory 10

First things first, meet up with your apprentice by the docks. He'll fill you in on how that sneaky assassin, the Sentinel, has nabbed two of your fellow assassins and is holding them somewhere nearby. Your objective markers will point you towards a restricted area swarming with Templar soldiers.

Now, getting to those captives without being seen can be a real pain if you try to sneak the usual way. Honestly, sometimes being a bit more aggressive actually helps here. A solid strategy is to use lethal bombs on those big groups of guards. You can do this from the safety of a crowd, which is way better than trying to navigate the rooftops where those pesky riflemen can spot you from miles away.

Use the bodies of any Templars you take down to lure other guards away from their patrols. This will help you sneak in and reach the first captive. Once you've freed them, move on to the second.

If you're having trouble, remember you can also use poison to create distractions or use your Assassin Signals to call in some backup. When you finally free the second captive, you'll get a nasty surprise: it's a trap! The Sentinel has figured out your plan and is heading straight for your den now that you and your apprentice are out of the way.

You'll need to race back to the den immediately. The Sentinel will be there, and a chase sequence will begin. Just focus on keeping up with him. Your apprentice will eventually make a move, leaping from a rooftop to bring the Sentinel down for good.