3 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.
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.