You played through the whole thing?!
It definitely has a learning curve to it. Not a fan of traditional difficulty modes, since you have no context on what easy, medium or hard means, when all you saw of the game is the title screen, but I get where your coming from, and agree that some assistance options should be available to the player so they can tailor their experience. Actually, a slider that controls the amount of bullet (between a certain multiplier like 0.5-2.0) would be an awesome thing.
Thanks you for the comment and feedback, can't wait to try out your entry during the coming days!
Cheers!