The DLC was developed to make helicopter operations more enjoyable by using a different aircraft engine from the original one.

In order for you to enjoy the flight, enemies will not attack you.
There is a day and night cycle at all levels.
STEAM Achievements

Level 1: Take off from an aircraft carrier and destroy all vehicles on the island.
Level 2: Destroy all enemy vehicles entering the city.
Level 3: Free Flight

How to play
You can select this game when you push "PLAY" on STEAM app.

Controls
ESC: Return to Menu
Space key: ascend
Shift key: descend
WASD, mouse: moving
Left Click: Shoot a Machine Gun
Right-Click: Launch a missile
C: Change the viewpoint

Limited XBOX controller support

Left stick, right stick: moving
Y: ascend
X: descend
A: Shoot a machine gun
B: Launch a missile

To play the DLC, you need a high-spec gaming PC that can run "Gunship Recon".