Silent Soldier 3D (Silent Soldier 3D)
In the game Silent Soldier 3D you will become a killer, which should be the best in this matter. You will be charged with various kinds of missions and you will have to fulfill them. For example, you will need to remove the head of the mafia syndicate, which is guarded by a whole squad of mercenaries. You will have to enter the territory of the country house and remove all the guards silently and only then the syndicate boss.