Please add hotkeys for sending waves and upgrading. It's really annoying clicking thousand times. And if you'd like to make a 4th of penguins attack, put something really new in it!
Why are there other heroes to choose? There must be only one wich skills can be improved, and not a shitty tank with bad controls. My favourite hero is the first, the man. He is easy to control, fast, but no upgrades for him. It's a good game, but the things I mentioned must have been done. Only a 3/5.
On the 7th level I attacked the enemy castle with huge army, I almost succeeded, then came such a great offense I could have done nothing. In half a minute I lost. What the hell was that???
After this I don't want that quest badge...