If the first thug in the room with the bed isn't facing the door you're peeking through (if he's looking at his bed it's fine), proceed to open the door and sneak up to him for a backstab. Peek through the doors where the thugs are located. If the latter happens, simply go back to the hiding spot and repeat the backstab process (It will be a good idea to pick up the weapons and ammo from the thugs as backup in case you can't stealth kill the rest of the thugs.) Otherwise, walk down the stairs to where the thugs are (DO NOT RUN). Either they stay where they are, or one of them will run up to check up on the noise. The thugs two levels below will have heard the cries of their comrade.

This is when you hide in the shadows backstab the thug once he comes close.

If you see only movement on the other side of the door, start tearing off the boards but do NOT open the door just yet the thug on the opposite side will come around from the roof to check on the noise. If you see movement directly below you in the room below, you might want to wait till the thug moves away before prying open the boarded door. Pay attention to the movement of the thugs. Open the door, and move on to pry open the boarded door right after it. Start off by sprinting towards the grated door on the upper levels of the brothel. A minimalist backpack would contain a knife, crowbar (or 2 lockpicks), and a sawblade (take 2 if you want the guitar part in the underground room located near where you first start off). Take Arica as she has a 1 hit backstab and can be a stronger alternative to Roman when it comes to stealth kills. By sweeping, I mean killing all hostiles in the location.

Download free brothel this war of mine