02 - A Spot of Tea | Syndicate Sequence 6 Walkthrough AC: Syndicate Guide

Eliminate the closest standing enemies from the haystack (you can also lure them by whistling).

Once you get to the marked restricted area, find two carriages. Next to one of them you will notice few enemies. If you remain careful, you can jump into one of the haystacks and kill one enemy from there and then search the carriage.

A well aimed dart can immediately solve the trouble.

As for the second one, it is a good idea to use the dart. You can throw it into the burning barrel when three enemies will get close to it. This should be enough to eliminate them. Or at least it will make it easier to finish them.

The third carriage will be the one you seek. To search it, you don't need to kill any of the enemies. All you need to do is walk quietly towards the carriage and search it when the enemy that is guarding it turns away (as on the screen). After searching it, walk on the roof.

Even if you are detected, you don't need to worry about the bypassed enemies.

The last part is following the carriage. Keep safe distance and calmly move behind the target, either through the roofs (it might be more time consuming, but you will not risk being detected) or by driving your own carriage. You will bypass enemies on your way - even if you are detected, you don't need to worry, as after driving slightly further most of them will decide not to follow you. The most important thing is not getting too close to the followed carriage and not losing it from your sight. The ride will end after a while, and with it, the whole memory as well.