Meet up with Erin on the rooftop | Prologue: The Drop Thief Guide

The bottle needs to fall somewhere behind the guard's back

Approach the chest and with several Bottles inside and take one of them (Garrett cannot pick up more items of this kind). Select the bottle from the inventory and start aiming. Throw the bottle so that it lands near the guard and diverts his attention. Wait for the guard to turn and walk to see about the strange noise. Then, walk forward and take the dark passage to the right of the main path. Remain here, for a few moments, and wait for the guard to complete his beat.

The crate that you can use to climb onto the wall

Try to obtain a new throwable (it may come in handy in several moments) and take a look around for the Chess Piece - 10G on the ground, and for Gold Coin - 2x1G a bit ahead. Approach the locked gate and climb onto the crate to the right of the gate. You can now jump to climb onto the wall [Northcrest Manor Right Wing - Courtyard].

Watch out for the opponent with a torch

In theory, you could now go ahead, but it is a good idea to explore the courtyard to the right, which is being patrolled by two guards. First of all, turn your attention to the opponent with the torch, who is much more of a threat. Jump down onto the yard when this person walks away and go right. Walk around the other guard and locate a Water Arrow. I recommend that you use it to put out fire in the center and hide (e.g. in the nearby wardrobe) to wait through the commotion.

A big chest hides a lot of loot

After the guards return to their posts, try to get each from behind and rob them (Coin Purse - 5+7G). Around the hearth there is an Ashtray - 3G, and there also is a big chest on the left side of the yard put out the candles and wait for the opponent with the torch walks away. Now go towards the chest, open it and collect a Pile of Coins - 20+5G. Note- after you are done, close the chest because, otherwise, the opponent with the torch will be alerted and you will have to hide again, as a result.

The rope that Garrett needs to jump to

After you have sufficiently explored the yard, return onto the wall, either by using the ladder or one of the crates. Continue along your path towards the roof, where there is Erin waiting for you. Run up and jump to grab the rope, and start climbing up, to the very top. Listen to the conversation with the thief, approach her and hold down the interaction key/button to steal her Claw, which will complete the prologue.