Like before, taking out the enforcers first will lessen the security of the other objectives and the main hideout.
Head to the warehouse where his crew is packing up the contrabands. He’ll be walking around but he’ll have a fixed path which makes him a lot more predictable. The main entrance is guarded so take climb over the other fence and take out the outer guards.
There’s a sentry in the other side of the warehouse, assisting with the loading so time your Sneaking right and you’ll be able to stealth kill him and dump his body to the water for the gators to feed. With the sentry gone and another of the loading gangmen gone, you can simply lie in wait for Nestor to walk to his favorite spot outside the warehouse and give him some knife justice.
Finally, take out the remaining guards in any way you’d like then shoot the barrels inside the warehouse to deal considerable damage to this racket’s income.
These boys are smuggling under the city via the canals. Find the access point by following the mission marker. Once inside, there will only be one entry point so you have to deliberately be seen by that guard facing the doorway then hide quickly to he’ll search for you. Hide beside the doorway and ambush him.
Relocate the body but this time, whistle to lure the other guy near the doorway (preferably without the target around) then kill and relocate his body as well. Now wait for the target to return to his position near the doorway and take him out there.
To deal more damage to this racket, kill the remaining men and swim to the other side. There are more contraband there that you can destroy. Take out the two guards then destroy the contraband. Don’t forget to grab the nearby fuse. You can now leave the area.