My daughter and I played this last night. It's a blast! It does ramp up in difficulty pretty quick though so be ready. It's arcade-type clear the screen until you get to the boss in each level. In each stage flies slow you down. Ground bugs eat CPU. Pace your weapon so you don't get caught recharging. Use grenades when things get hairy. Don't forget to press start when powered up to use your special weapon. There's a lot more but that should help. Good luck!