When experience is maxed out, ability to "Prestige" and start from lvl 1 again but this time you can get special classes for minions. Maybe even different classes unlock for how many times you Prestige.

Ideas:

-Shortbow: faster / less range than hunter

-Longsword: more damage / slower than normal sword

-Fire Mage: ranged AOE attack / only wears hood (lower health)

-Ice Mage: range AOE slow-down / also only wears hood

Add a shop to trade food for wood. Right now you can get coins for wood from a shop, and food for coins in a different shop. This way getting resources is more even.

zombies that randomly attack and infect followers.

I bought the backpack but it never increased my cap to 40

When you click on the thing to spawn a guy, once it's in your hand, you can't put it back. 

I have one question. My minions ate TWENTY mushrooms and they not got healed (yes, I upgraded on "mycology"). What actually these mashrooms are doing after being eaten?

Imć Zagłoba

So we can turn SFX or BGM off.

the tree and arrow textures are black rectangles