Well, I'm probably not going to finish this one. The combat is interesting but there's a TON of it and, after a while, it starts getting pretty repetitive. Shooting is shooting - either you're doing lots of scratch damage or converting the scratch to real damage. There's different kinds of ammo to apply to different kinds of weaknesses but there doesn't seem to be any new strategies to learn. It mostly seems to be about keeping your weapons upgraded enough to deal with the higher level enemies.
The story is really, really weak. It's almost like they made a 120 minute anime movie then decided they couldn't put that into the game so they just cut out all but about 20 minutes worth then divided that up into 15 parts to feed to the player at the end of every chapter. It's all but impossible to follow given the number of hours between chapters. A few Steam reviewers say they finished the game and still haven't the faintest idea what the main plot is supposed to be about.
The characters themselves are good ones. The English voice acting (at least from the main three) is quite good.
I'm at chapter 7 now and having a hard time getting myself to play the game. But maybe that's the way to play it? Buy it on sale for around $20, enjoy the combat system, then bail when it starts to get dull. If you get lucky and really enjoy the combat system, then great. If not, well, you're all experienced gamers - just seeing the new ideas in the game is worth $20 and a couple dozen hours.