I don`t know what`s it called,but i have played it and remember it.
You start in the sky as a human with a machine gun and a glider. You can go up/down/left/right,so thay glider is for keeping things logical,it doesn`t do anything. You will encounter soldiers from big planes,choppers,etc. You feel 3d,but Arcade machines don`t do 3d. The island is in the background. This is Level 1.
Level 2 is on the ground,on the island,where there i a big house in the ground. Again,it feels 3d,but it`s not. It`s just a great game. You encounter soldiers,tanks,etc and you progress through the road,to the villa.
I can`t remember anything else. Please help me find the name of this great game. I remeber in the left was Double Dragon and on the right was Final Fight...oh,the memories... :D