Hack 'n Slash is easily one of my favorite genres out there and when done right they're nearly peerless in terms of making the player feel empowered. However, that "when done right" is a HUGE caveat to the whole experience because they're so easy to screw up. Hit boxes are something that in many other genres have at least a bit of wiggle room. Great Hack 'n Slash though really can't be quite so loose with them though. Games like Bayonetta, DmC (New and old), even The Witcher 3 are all about dodging attacks by narrow margins so you can then go on the counter attack.