it ws okay - too easy and way too repetative. There are only about five levels and the rest are just variations. Would have liked to see more variation.
In the missions, I recommend leaving the previous battles up so that we can see who we have already defeated. It woud be even better if we could battle themwhenever we wanted, but at least leave them up.
This game really cheats. My "opponent" played a card with 2 attackand it wiped out 14 from my deck! There were no additional cards played and not mark for critical strike. Ridiculous.