The game is easy and fun, all those who complain (about the difficulty level) could use a lobotomy.
And I personally like the fact you cant choose a deck, it adds to the random factor and removes all the geeky preparation beforehand.
You have to invest in future battles when you play.
Instead of giving the final blow fill health and sanity etc.
Works great for me, I always have 1-2 levels above the opponent. And the more you invest the more you have later because of your advantage...