the map is really small, maybe could be a good idea to don't make Woods and mines disappear, instead make 'em cost more
Bunni goin' up and down for the whole map all the time is no good
high potential, but lack on infos and extras
example:
1) Tower merging guide ( for each different combination ) - it IS ridundant, cuz you understand through the game, but could be good. Otherwise, make a sort of " Bestiary ", unlocking entries discovering new turrets
2) Elements effects
3) Enemies stats through each map ( mouse click or a simplier life bar over 'em )
4) maybe more choice on difficulty settings
 "Bullet Chaos"){kind=icon}
 "William and Sly"){kind=icon}
 "Bunni: How we first met"){kind=icon}
 "MoneySeize"){kind=icon}
 "Snow Virus TD"){kind=icon}
 "Fragger"){kind=icon}
 "GemCraft chapter 0"){kind=icon}
 "Meat Boy (map pack)"){kind=icon}
 "Pirate Defense"){kind=icon}