Reach the main hall of the cathedral | Chapter 7: The Hidden City Thief Guide

The bell

If you have decided to take the main entrance to the cathedral (the one that the scaffolding, in the main yard, leads to), in spite of my recommendations, then you will start the exploration of this building in the antechamber [The Old Cathedral - Antechamber]. Of course, it is a good idea to explore this area to obtain a Telescope - 45G (on the scaffolding), a Pile of Coins - 20G (in a locked chest) and a Cup - 2G. After you have explored the area, hit the small bell with the blackjack.

Note - if you are going to take the side entrance, you do not need to worry that you will miss the opportunity to explore the antechamber. All you need to do is, simply, locate the lever that unlocks access, after you get to the Eastern part of the main hall.

Climb onto one of the ledges higher above and wait for the enemies to go past Garrett

You now need to hide quickly, because hitting the bell and unlocking of the door here, for obvious reasons alarm, at least two of the opponents staying here. Hide on one of the ledges above and wait patiently for the opponents. Do not leave your spot until the guards walk past Garrett, and walk towards the starting point. Only after that, jump down and walk into the main hall in the cathedral [The Old Cathedral - The Pit].

Climb onto the successive crates

If you have followed my suggestions and you took the side entrance to the cathedral (the one over the crates next to the side yard) then you will start exploring this area in the derelict location with the huge bell tower [The Old Cathedral - Belltower]. Jump down to the balcony below and do not worry that it will collapse, because nothing bad will befell Garrett. Start the linear walk, climb onto crates, where possible. After you climb over the first set of crates, jump down to the very bottom and look around the area for a Brooch - 25G and a Poppy.

Note- if you have taken the cathedral's main entrance, you will not be able to reach the location with the bell tower (Garrett cannot get back to the yard, nor use rope arrows). In such a situation, you will miss the opportunity to collect the brooch.

The place where Garrett needs to squeeze through

Climb onto crates again and jump towards the hanging rope, thanks to which you will get to the balcony above. Take the stairs and jump towards the neighboring ledge. Climb over the next set of crates to reach the place, where Garrett needs to squeeze through between crates and make his way to the cathedral's main hall [The Old Cathedral - The Pit]. Do not try to hop over the balustrade and go left, thanks to which you will locate an area where it is completely safe to jump down.