Nice game, great graphics, innovating!
Only two small things:
* auto-scroll to newest reward would be nice (now you have to scroll through the list to find the one you can collect your reward for, and sometimes that's near the bottom. hahaha)
* 5 level up per heping hero is a nice thing, but can they be bought with one click too (especcially when you make 1000's of coins per monster, having to click 5 times for a 10 coin hero is not very funny to do)
Edit: at stage 6, and every hero achieved and kept at their max level, you are only scrolling between the heroes to add 5 more clicks to their levels (and forget to level up your main character in case the next boss needs extra clicking to be killed, let alone the potions... i keep forgetting to buy them too. hahaha)