I've gone through the tutorial and the first two levels, and the lock on feature is the only thing that really annoys me. The motion controls are totally gimmicky, but I haven't had a problem with them.
Far from a perfect game, but not bad* for the $38 I paid for it.
*I should also note that I slog my way through shitty Gundam and other anime-licensed games, so take this with a grain of salt.