A lot of downsides
It's hard to aim, bullets don't hit the bad guys if you don't stand on the exact same row with them, you can't shoot while jumping, and, worst of all, you can't shoot a bullet until the previous bullet have left the screen - and it happens not all the time, it's totally random: sometimes you can shoot normally, like in any other shootout game, and sometimes not! What's up with that? And why can't this cowboy move backwards and forward, only left and right? It's kinda like playing tetris.