I must admit, I enjoy this game!
But there are two things that bother me during Boss fights. First thing is that I can't move a level backwards. I dont have to go back to the levels with extreme gold but if the Damage is really low you kinda get stuck. This brings me to the second point. I cant select targets for my weapons. If I am unlucky I hit the real strong cubes and just get a minimal mount of gold. Grinding is okay but this slows the progress unnecesarry down.
Anyway keep up the good work!