Luger pistol image - Run Aim Fire

I plan to create the game, similar to the classic game metal slug. for anyone who hasn't played metal slug it is a none stop shooting game, but it also has loads of blood and gore for a old game. this will have the classic side view cam, that follows the player, it will also have the same controls, shoot up, shoot down when jumping, shoot left, shoot right, and diagonal positions. the only difference is this will be 3d