Top Hunter, A game originally off the Neo Geo CD me thinks. If you have played any of the Metal Slug games, this bears quite a similarity. NOTE this was never really released for the DC. Some dude made a selfbooting image of this running on a emulator, and posted it on usenet.
http://www.mediafire.com/?sharekey=fce41b05ecb9d4bb8ab8b2f348899ad0a8b6dcaf7f1e56b4