Head through the level normally until you go through the fish market. Once you leave the fish market and enter the main Pit area, immediately turn to your right. Jump over a barrel and onto a thin stone ledge, follow this around the building to a doorway. The first brick is hidden just between a bookcase and the stairs on the right.

Head back out the door, hop over the wall in front of you, and immediately look up and slightly left. The second brick is hidden underneath the overhanging house in the corner, before the archway.

Head back through the fish market and into the Pit. Cross the bridge and pass a hut on your left. Turn left and look for a balcony below, drop down to the stone ledge, then hop across to it. The third brick is behind a barrel at the end of the balcony, on the right.

Head back the way you came and drop off the balcony, then left up the stairs into the Eastern Pit. Keep to the right here and follow the city wall until you see a house with archways on your right. Head through these and out another arch, taking you to the rear of the house. The fourth brick is immediately to your right, on the house wall.

Keep right again, toward the next house, then take a quick left. Slip down a side alley on the left here, and the fifth brick is behind a crate on the right in this alley.

Drop down the two wooden ledges at the end of this alley to the lower level, then turn right. Make an immediate left and drop down, into Zwickmühle Allee. Head right towards a gatehouse at the end of the alley. The sixth brick is behind some crates at the far end on the right.

Turn back and head down the alley, taking a right at the point where you dropped down. Carry straight on down this path straight past a wagon, then turn left toward a flooded courtyard, then head down through the arch into the Footpad Canal. Head up the stairs, then take the first left, past the crate and down to the dead end. Turn 180 degrees and the seventh brick is high up above the archway you just came through.

Head back out to the Alley and to the wagon you passed along the way. This time turn right past it, and onward through the flooded streets of the Lower Pit. Take a left onto a small walkway by the side of a house. Drop down at the far end of the walkway and crouch underneath it, the eighth brick is underwater against the house.

Back over the walkway then turn left, turning right at the next major street and heading under the archway, then up the stairs here. Turn right to reach a covered marketplace. At the far end is a ladder, climb it. Turn around immediately and look for a ledge curving around the building to your right. Walk along this ledge and onto a balcony, the ninth brick is to the right at the end, high up on the wall.

Jump back down into the covered market and leave to the right at the end. Keep right and head past the barricades, hugging the right wall. The tenth and final brick is at the second set of barricades, behind a crate.

Turn around and go forward under a small bridge. Turn left and follow it to the next turn. Bend left again and follow the curve of the building around toward a garden with a large tree. Cousin Okri's stash is through the archway just past the tree, which pressing all the bricks opened.

https://www.youtube.com/watch?v=UQ6aQ6hmBnc Credit: DrinkieWinkie Games

You can find the rest of the challenges for this map in this guide.
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3264185268