The worst thing about Bayonetta are the Alfheim missions - or rather, how you're forced to play them whenever you want to play for score/Pure Platinum ranking. I don't want to throw the entire concept under the bus because a lot of them are fun combat arenas, but there are also a bunch of them that put stupid, arbitrary limitations on you that are absolutely no fun to complete, let alone score well on. Button mashing finishers also suck because the faster you mash, the more points you get, so you have to hammer some button ALL THE TIME. And of course everything involving vehicles is god awful.
It's a good game though. Of course I'm going to wait for more footage and info about Bayonetta 2 before buying a Wiiu, but it should be excellent if they were able to identify all of the problems and bad design choices in the original.