This game was fun! Very reminiscent of Metal Slug. I THINK this is beyond the capabilities of the NES and felt more to me like an arcade cabinet game but I could be wrong. Nicely done!
Thanks for playing! On an NES it'd likely chug a bit and have flickering, but graphically I tried to adhere to 90s era NES games, adhering to palette limits but using tricks like scanline interrupt parallax or sprite multiplexing.