From now on, after each mission, you will get back to your hideout (may look differently, but the equipment will be the same). You've got a moment here to complete your equipment and skills for the next mission, as well as to prepare different items on the workbench. Remember that your outfit and dagger can only be chosen in the hideout; skills can be chosen at a special table - they can be found sometimes during missions, but that's a rare occurrence. When you're ready, head towards the door at the end of the cave.
The first goal - talk to Ephron. After the first cutscene with the view of the city, tear down the 1st poster (there are 11 in this mission). After a short exchange, go to the building's roof, but before that, that the 1st token from the crate at the bar.
A precipece and another building with a small courtyard in front of it. Go there to find the 2nd poster (1) on the wall and the 2nd token (2) in the middle of the courtyard. You can enter the building on the first floor, approaching from the side of the rocks. In another courtyard, you'll find the 3rd poster.
Then you can easily climb the wall of the red building, while still walking next to the rocks. Pass the guard by walking on the balcony and jump onto the rocks at the precipice. Slide down the rope to the very bottom to collect the 3rd token. From here (above, before the market) you can continue or enter the next building through the door.
Go through the corridor, down to the lover floor and onto the courtyard - you'll find another, 4th poster (1). And the 4th token (2) on crates, behind a trolley in the middle of the square (just extinguish the torch to be able to pass without being exposed). Get back up the same way.
Now take a rope down to the yellow house (1). Before entering, on the wall on the left, you will se the 5th poster (1) and the next (6th poster (2)) a dozen meter towards the city gate, on the square. Enter, but first check the placement of three guards: on the bar lies the 7th poster (3), behind it, on the cupboard, the 5th token. Climb two floors up on the rope, exit through the balcony - behind the workbench lays the 6th token.
From the balcony on the first floor (2), you can easily get towards the city gate and go through it (3). Before you do this, you can try getting the 8th poster (4), hanging next to it.
Behind the gate, there's another square: before the building there's the 9th poster (1), and on the crate next to the handrail, 7th token (2). Get to the building behind the square. Taking the stairs (1) half way down the floor and then the rope onto the first floor (green walls). The first room with an open window is safe and contains the 8th token.
The interior of the biggest room on this floor holds the 10th poster, which is lying on the table (hide underneath it and wait for the right moment to grab the poster). Next to the window, a few feet away from the poster, is the 9th token.
Now you have to get to the very top of the building, just to approach the airship and discover there's no way of entering it (before the raised footbridge, which serves as entryway to the ship, you'll find the 11th poster).
Fortunately, you don't have to venture far away to continue the quest. It's enough to enter the marked crate (on the right side of the footbridge). Use invisibility or throw a glass bottle to distract guards. Take the 10th token which is right beside the crate that you want to enter.
However, if you trigger the alarm within the city walls (or if enemies turn it on) you will not be able to hide in the crate. You will need to follow an alternative path: use the line to get to a small and empty ship nearby. When you take the helm, the quest ends.