I really like the concept and challenges, but the controls utterly suck. Challenge 4 took me almost an hour because the stupid sword was suicidal, and the shield was trying to snipe the dragon from across the map...without a gun. >_>
The **** was that? Blinding colors, repetitive gameplay, lack of a healthbar, no upgrades.
This is nothing but a seizure enducing, pointless shooting game. So many better of its kind out there.
No, it is not impossible to have two of a character in a deck. If you have one as a starter, and another version such as R2 of the same, you can play them both.