Rewards: Pounds: 500 (+100), EXP: 1250 (+125)
Challenges: 1. Use darts on fire sources near enemies.
This mission introduces Hallucinogenic Darts to your inventory, and Alex gives you two for free. When you hit an enemy with it, a purple icon appears next to their head and they'll attack anyone in their vicinity. If their allies are the only ones nearby (and you are out of sight), they'll thus start bashing their allies. When all non-hallucinating enemies in the vicinity are defeated, they'll collapse themselves. It's good to know that you can use the darts on fires/heat sources to create a blast, with the hallucinogen spreading to all enemies nearby the fire.
Make your way to the docks as indicated and move close to the middle. The challenge still allows you to take out enemies, as long as you inflict nine enemies with hallucinogen by way of fire blasts. On the dock, three Rooks are held captive and several Blighters are standing guard. Use a dart on the fire there to knock the first two off your list. Kill any remaining thugs and free the Rooks, then check the middle of the area. If there's a thug here, knock him out with a dart by shooting the fire bin. Otherwise, just check the nearby chest (locate it with Eagle Vision) to collect two darts.
Move to the dock on the side of the area and shoot the fire bin with a dart to hit at least one more enemy with it for the challenge. Once you defeat the other thug and brute (or wait for them to battle it out), open the large crate to collect the first of three cable lines.
Move up the nearby stairs and hide behind the stack of wood, where you can open the chest for two more darts. There are quite a lot of thugs and a brute up ahead. One thug is standing near a fire bin to the left. Wait for the brute to stand close to him, then shoot the fire with a dart to hit them both. They'll then battle it out with each other and the other thugs. (If you hadn't done so yet, you should check the middle of the area again too, to possibly spot a brute standing near the fire bin there. Hit the fire - and him - with it, then either kill him or lure him to the nearby remaining thugs.)
Continue to the area with thugs underneath an open building and try shooting the fire bin with at least one of them standing nearby. You can open the chest on the walkway to collect two new darts. If you fail to shoot the fire bin with one of the thugs standing nearby, try luring one of them close to it, although this may be tricky. In any case, collect the second of three cable lines from the large crate here.
The last large crate is down the street. Shoot the fire bin with the brute and thug nearby to finish the challenge (provided everything went well so far) and finish the last thug near the large crate around the corner by luring him towards you with a whistle, then perform a cover assassination.
After this you'll need to quickly make your way to the boat depicted in the short scene, so rush back to the dock and Free Run over obstacles and boats until you reach it. Defeat the three enemies and open the chest, then quickly make your way off the boat and out of the area.