It's a really interesting game, I love the deck-building puzzle mechanics!
It can be a little rough, incorporating RNG into puzzle games... there were some levels where if I didn't have the exact right cards turn 1, the monsters would reach the exit by turn two or three. And these were fairly early levels, so it's not like I had 12 copies of each card to stuff my deck with. At the very least, options to restart a level early would be nice.
I love the graphics & sound design, though the game seemed to chug a little, especially as levels were loaded (even in the downloadable version)