Just shoot at everything that comes your way, if you like that, try!
Sometimes the enemies come in very unfair rate, and I bat the game in "Normal" mode, there are two other harder difficulty levels that I just don't even want to think about.
I haven't try the multiplayer feature of this game, sorry, can't comment, but if you're like me and appreciate the mistreated gamecube and find this game for less than a cup of coffee, there's just no reason to skip this game, specially if you like repetitive and frustrating ways to beat each stage.