Most likely there is no point in getting this game to run as every port of it on this earth is already emulated with 100% accuracy, among them the vastly superior Arcade original and awesomely well done Saturn port as well, still, it would be nice if someone could look into this problem:
Menus and Mission 1 work fine. However, at the start of Mission 2 the flags at the top AND every sprite placed on the screen will NOT scroll to the right as you move, they are locked in place. This results in the game being unplayable after a few minutes as the game stops scrolling at one point of the level - a bunch of bazooka guys fall down which you have to kill, afterwards it continues. Now, the bazooka guys don't come due to this glitch, making the game stop scrolling, rendering it unplayable. Most other emulators also do this, well, the ones that can even get to this point without crashing.