4 weapons match your filters.
Hallucinogenic Darts
Hallucinogenic darts fire silently from the twins' gauntlets and drive the target into a frenzy. Shoot one into a fire or other heat source and it bursts, spreading the toxin over everyone nearby. Bell builds the launcher after the twins intercept a recipe for the serum in Cable News.
Hidden Blade
The Hidden Blade is the Assassins' signature weapon, a retractable blade under the wrist that Jacob and Evie each wear in their Assassin Gauntlets from the first mission. In Syndicate it is your tool for quiet kills, air assassinations and double assassinations rather than open fighting.
Smoke Bomb
Smoke bombs throw up a cloud thick enough to blind and choke anyone inside it, giving you time to escape a fight, slip past guards or close in for a kill. They are part of Jacob and Evie's kit from the start and stay useful all game.
Throwing Knives
Throwing knives are a starting tool in Syndicate for silent kills at range and for distractions. New in this game, a thrown knife can also trigger traps such as hanging barrels, and Evie can carry far more of them than Jacob.