The Ka-50 "Black Shark" is a single-seat Russian attack helicopter with the distinctive coaxial rotor system of the Kamov design bureau.
The KA-50 role in-game is that of the boss objective in some of the PVE missions.
It will circle the area with the player squad attacking with both missiles and auto-canons. Such boss-fight areas will have Stinger type missile lunchers available which can be used by any character class. The gunship has significant armor though and it will take a number of hits to bring it down.
It can be seen on Warface Asia Gameplay Trailer attacking players.