Also from my other coment have to do something with the extra exp like really guys... i only defeated 1 trial battle and my hero has 5.5k exp like make it change to HP or something because this is fuking annoying.
As others have said this isnt to great to play while your hero has only like 2-3k hp and other units such as black dragon and that cannonball guy have well over 10k hp so u should scale the heros to have #1 more hp #2 more power #3 better defence if u did this im sure people would stop haveing bad issues of the game and shut the hell up on comments. Thanks for listening