My copy of game still didn't arrived, but from what I read (NeoGaf) player impressions are pretty positive even some players have problem with controls (mostly at beginning).
http://www.neogaf.com/forum/showthread.php?t=1210408&page=11
And we have here @spurgeonryan ranting like this game is worst game that Nintendo is made and calling it dead of Star Fox franchise, but thats nothing new from him.