Hello, thank you for trying this demo, the first level of the game has not been completed. The initial chopper was confirmed, but the biplane chopper as the little boss was temporarily tested with a 3D model rendering, not the final look of the game.
The problem of frequent weapon replacement is that the button to change the weapon overlaps with the jump button. You can set the button by pressing F1 to call up the setting menu.
My English is not good, this paragraph of text is translated by machine, please forgive me for any translation error, thank you!