I just finished Area 2, and i gotta say... this is quite an impressive game you made! Very touhou-like, movement might be a little slow at first but bullets are not that fast. Bullet patterns and speed are well thought, and even though some asymmetric bullet patterns are pretty much easy to escape, tracker bullets are a complete pain in the ass (Area 2 boss almost got me). Graphics-wise, patterns look great and the whole game aspect is bright and colorful, and music is simply amazing (with all that futuristic looking ships and music, megaman comes into my mind lol).
Even though i've seen enough in Bullet Hell games, this one stands out. BUT, i can't help but point out two major flaws i've seen. Even if you can't have more than a certain number of weapons, you can still buy more than what you're allowed! I wasted money in a weapon i thought i could use just to be surprised when the bullets didn't add up. AND, it doesn't have a tutorial level (or a quick walkthrough). That's the only reason i'm giving you 4.5 / 5 .
Keep working dude, nice job!