WiiU's much anticipated exclusive just launched in Japan and France's most respectable website Gamekult grabbed an import copy and reviewed it.
http://www.gamekult.com/jeux/test-hyrule-warriors-J3050211338t.html#wiiu
Pros
Well integreted Zelda traditional features, boss fights, upgrades, Coop & Adventure mode, Zelda universe well rendered, cutscenes
Cons
Repetitive as hell, graphically underwhelming, dumb AI, mute characters, some missions are too long, too few characters, no online multiplayer
For comparison, Gamekult awarded PS4 Dynasty Warriors 8 a 5/10
Meanwhile, Japanese players are eagerly playing the game, but report numerous freezes and frame rate drops.
http://blog.esuteru.com/archives/7814408.html
Will Hyrule Warriors find success despite those launch hiccups? Will the French believe in Nintendo more than in Gamekult? Future will tell...