Instructions and controls: Fly your helicopter using the WASD or cursor keys. Press the space bar to release and pull the winch. Hit the R key to turn around. Move the mouse then press the left mouse button to shoot at your enemies. Remember to avoid hitting friendly units. Toggle weapon using the mouse wheel or number keys 1-3. You can choose the items you will use at the beginning of each mission, you can buy some upgrades and new weapons, too.