I like a Bullet Hell game as much as the next guy but this game has a few flaws that just take all the fun out of it.
First: The weird helicopter things that shoot the laser beams across the screen--be it side to side or top to bottom, they are nearly indestructible (gave one them six level 10 sword strikes and it STILL wasn't destroyed) unless you use your special OR have the attack power up, having SIX of them on screen at once--like in Machine City--two on either side and two at the top of the screen while those red and green glowing energy bombs are going off makes it impossible to dodge or even defend yourself with your sword or dash since it drains so fast.
Second: Having your sword and dash drain your special energy bar and you can ONLY refill it by getting the S power ups is bullshit considering how many projectiles can be on the screen at once, epically in the later levels.
Third: Getting hit is a given in a bullet hell game but normally the hit area is very small, giving you a better chance to not take damage and you can dodge, there is always a small "safe spot" or two that you can use but making it so you CAN'T dodge and your entire body is a the hit area...
Like I said, that takes ALL the fun out of game like this.