Some may like the music, I'm not one of them. It's an OK game, but the controls would be better if it was click and shoot. Also, there is no reason to have dodgy diagrams instead of words. Innovation is good, but this is in the wrong overall direction. 3/5.
To Forkman (and anyone else who cares): I did the same as you, still no card. I've done it about 8 times now, refreshing, etc, and it hasn't worked, badge inclusive. I guess some will get lucky, and I'll keep trying, but as far as I can tell, there's no way to assuredly get the badge.
It's OK. The battles could be more exciting, but the depth of play and the atmosphere make it quite fun. Haven't tried battle mode yet, though I may soon.