The best methods have been presented below.
To assassinate Matthieu Mendola this way, you have to disguise yourself as the fortune teller.
you might find him in the North-Western part of the map(M9,5).
Do not enter or the man will get suspicious.
Instead, find the fuse box in the nearby alley(M9,6).
Sabotaging the fuse box will make the fortune teller go and see it.
After the attack, conceal the corpse in the container and put on the disguise.
Return inside and sit on the chair.
Before your target arrives, approach the smoke machine shown in the above screenshot.
Interact with it and crank it up to generate thicker smoke.
This is necessary, if you do not want to be spotted.
Sit on the chair and wait forMatthieu Mendola.
Soon after the conversation starts, the icon that informs you of assassination opportunity will be displayed.
After the attack, conceal the corpse in the container.
The important piece of information is that tastes them each time around, starting with the second time.
This will win you more time to poison the snails.
However, it is much better to take lethal poison on the mission.
By default, it is impossible to poison food without being spotted by the vendor.
Next, reach the generator(M10,6)that powers the fan on the snail stand.
After that, wait in safety for Mendola to arrive.
If they are, wait for them to leave.
In this variant, you are to sabotage one of the phone booths thatMatthieu Mendolawill use.
The exact booth is the one in the alley next to the cafe(M10,4).
It is not a good idea to attack the handyman, because this will alarm the entire vicinity.
Instead, pick up theutility room keynext to him.
Inside the room, you will findhandyman disguise(wear it) and ascrewdriver.
Do this at the moment, at which Mendola is around food stands(M10,2).

Using the switch will make the handyman come here.
Go to the phone booth(M10,4).
Watch out, because the handyman may blow your cover.
Sabotage the phone booth.
If you have timed everything well, you should be able to do that right before Mendola arrives.
Otherwise, the handyman will come back and will die after he touches the phone.
Assumptions of this variant are easy, but execution may cause some problems.
Matthieu Mendolawill occasionally stop under the neon lights.
This will decrease chances of being spotted.
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