@BisonHero: First of all, yes, the term bullet hell is overused in a lot of modern game reviews by people that aren't really familiar with the genre. And even bullet hell games have difficulty curves, Second, most footage of the game looks to be on normal mode, which is far from the highest difficulty (Generally, the highest difficulty is about arcade level). In the case of this game, it's quite a bit more hellish on higher difficulties.
As for the review, I have mostly disagree. This is one of the best non-Cave modern shumps to come out in a LONG while and the only minor annoyance (less minor when you first encounter it, I'll admit), is the few seemingly random instadeath attacks that it likes to throw at you. Honestly, though, I don't see how it would affect anyone. The hardcore players are going for high scores and 1CC's anyway and will therefore replay the game MANY times and be intimately familiar with those attack, which are easy to dodge if you're expecting them. And the casual players will just play through, enjoy the great soundtrack, excellent visuals, and surprisingly engaging plot, and fun surface mechanics, use a bunch of continues, and get to the end anyway.