This game is really easy, especially for a shooter.
Maybe you've been playing too much of that new shit like Uncharted or Gran Theft Auto or whatever, where there is a save point every 2.5 seconds, and you have infinite lives, and all the enemies barely fight back at all because focus groups say that if the game actually requires skill the bratty teenagers that buy this garbage will abandon the series for something easier. Those games. Throw all that shit away and play something like...Viewpoint on Neo Geo, for a whole weekend. Nothing but. Then when you come back to Zonk it will seem incredibly easy.