This had a really neat gimmick! It felt utilized just enough to challenge the player without overdoing it, and makes you get accustom to other shot types that each had their own unique uses. That combined with the overall completeness of the game is really impressive! My biggest criticism is that it can be hard to keep track of your character for various reasons. For one thing, the spinny ghost familiar is a bit too opaque and obvious and I kept mistaking it for my player moving in weird ways. The background is also fast and sharp enough that it becomes a problem sometimes. I also really wish you threw in a checkpoint or two during the boss, since you don't get bombs and it just becomes an issue of how long until you don't make mistakes. Anyway, i really like what this brought to the table, good work!