Well, rented this through gamefly and it was a short discussion. Sent it back after maybe 30 minutes.
It feels like a tech demo for the potential for a game, as the controls are actually not so bad and the combat system is pretty neat, but the crap graphics, tiny, bland environs and repetitive enemies just kill the experience.
I don't believe Namco made this game: this was likely outsourced to some other company for production because there's no way in hell SC has ever looked this bad.
The co-op mode is sectioned off into smaller levels which don't affect the main quest, which sucks. It would have been much more fun co-op and if there was some kind of leveling system.
The real killer, though, is that it's just another dungeon crawl: kill the enemies, the door opens, get past a few traps, kills some more enemies, kill a moderately difficult boss. The Wii controls work well enough, but the overall game just can't save itself from the fact that it's a dungeon crawl and not a multiplayer one, even.