Avoid.
Combat control is imprecise, air combat seems to be there purely for an achievement, and it feels very detached, as you simply push the right stick and watch as he does the work.
You can get interrupted mid heavy attack by a mini-boss hitting you but you can't cancel it yourself with a roll or jump. Health only drops from enemies, so once things start to go downhill they just keep getting worse, because you're attacking a single thing at once, and they're all belting you. You will die. Often.
But it doesn't matter! Because death is inconsequential. You just get shunted back a touch and you're good to go. What a great way of dealing with a badly designed combat/enemy system, well done guys.
The talent system is an obvious afterthought and pathetically implemented to boot, the combo system that only has three charges and shares itself between ruiners, spider bombs and battle cries, and the loot system makes stuff drop so often you'll be going through the painfully setup menus every 2 minutes to change gear.
The camera is a joke and the level design is worse than Halo 1. Yes, apparently it can be done.
When it comes down to it, little of all that matters, because this is an RPG, yet they've decided that the creatures should level up to always be a challenge the player. Completely against the entire logic of an RPG and leveling in one. Why level us up, drop new gear, or allow access to older areas if you've going to make the challenge the same all the way through?
Just say no, everyone.
Get Mercenaries 2 (although that appears to have disappointed as well), or Warriors Orochi or something. Seriously, Kingdom Under Fire : Circle of Doom is better than this, and that's saying something. Get that if you really need a hack and slash. At least the story in KUF:CoD is completely bonkers and not half way there like this.