You can purchase upgrades for your suits that allow for rapid fire, ya know. It doesn't sound like you have played it very much.
Actually, I purchased one of these upgrades. It made the gun go a little faster, but not as fast as hitting the button manually. Wasted my time. What really sucks is having to play tedious trial missions over and over to get upgrades.
PN03 is just like an old-school shooter, except that it's poorly designed with tank-like controls that are compensated for with auto-aim
This very board made me think I'd like the game because I love old school shooters like Ikaruga. Now that game is a fun challenge.
I didn't mind the crap story, or unintuitive controls, or repetitive level and enemy design. What did me in after a while was that the game is just frustrating. This is coming from a guy who beat F-Zero and is stuck on one of the last bonus levels in Monkeyball 2 challenge mode.
Don't let GAF fool you! Believe the reviews!