@hexidextrous Stage 6 and stage 6 boss are both from Eden's Aegis (songs are called Solitary and Retro Futurism, respectively). I assume you know about the stage 7 songs (since they're from DoDonPachi Daifukkatsu and Crimzon Clover). The first two final boss themes are from Guilty Gear X ("Awe of She" and "Bloodstained Lineage") and the True Last Boss's theme is from Fate/Stay Night: Realta Nua ("song called Mighty Wind").
@hexidextrous You might be interested to know that other people also thought the stage 7 boss looked pretty lame, so I've beefed up its sprites a bit. Stay tuned. Assuming real life doesn't decide to suck, I could get this game out this weekend.
@DrThunderous9x Honestly, I just used Game Maker. It's an engine that gets a bad rap pretty often (perhaps too often for its actual quality), but it gets the job done. Thanks though!
@hexidextrous You have exceptionally high standards if you want my game to be as awesome as Crimzon Clover. :P Truth be told, I was kind of at the end of my rope in terms of enemy designs by the end of stage 7, and the result was a somewhat lukewarm final boss design. I'd hoped to make up for it with the presentation and the True Last Boss. Not to mention, I suck at graphics anyway. :V