The latest installment in the World of Assassination trilogy, Hitman 3 gives you the freedom to explore the intricately designed set-pieces at your own leisure and complete the mission in your own way be it stealthy or guns blazing just like in previous Hitman games.
To get the helicopter key, from the lobby head up to the stairs on the right and move towards the edge of the rooftop gardens which is also on the right side. From there you’ll want to climb down the railing and shimmy over to the left on the ledge until you can climb back up to the window cleaning platform.
Use your camera here to scan and open the locked window, crouch, and carefully head towards the left side where you can go through a sliding door, turn left again and move to the scaffolding that leads to the helipad. You’ll find the helicopter keys lying on the floor right in front of the ladder. Climb up, and either subdue the pilot or distract him long enough to board the helicopter and exit the mission.
Doing this, unlocks the “Up and Away” challenge and completes the Rotor Man and Rotor Ready challenges.
Hitman 3 is available on Playstation 4, Playstation 5, Xbox One, Xbox Series X & S, Stadia and PC.