New difficulty

[BlackSniper]

I agree as well. In the beginning, Normal is fun as low character. But the point when you reach level 20 and you need to go to level 32 is way too long and should be improved.
Make the requirement for Hard mode level 28 would be a great improvement in my opinion. Lower levels on Hard doesn't matter since tier 4's and hero's can easily win till wave 12-16.