One of the tallboys aims his compound bow at a civilian.
Tallboys use a four-armed compound bow as their primary weapon, which they use to fire arrows with explosive whale-oil heads. This weapon grants them exceptional range and power when dispatching foes, as well as a significant blast-radius.
As with all enemies, though Corvo Attano can possess tallboys with his supernatural abilities, he cannot utilize the compound bow in that period.
Concept art of the bow.