You should have put more modes in like survival classic (the arrow thing) etc. Because people keep saying its boring and tedious, and some noobs say its not epic bla bla. I sort of get bored as well, so i just always leave mine on and play something else, so maybe more excitement? Instead of those revenge waves, I'd rather get mini ones but in certain times like every 3 minutes or something. In this you either easily win or struggle and lose.