This game is so easy ... Create Fireball pipes + horn blowers + sprind board on max lvl on this order and 0 ground creatures can pass. Spells are useless, upgrade your defense too, because its too easy to doesn't take any damage.
But its a good game, just need optimisation 4/5.
To kill the frog control this with stun and silence, don't forget to used bomb ! It's pretty long but it's not so difficult (:
The frog didn't attack me only once with that !
 "RobotPet"){kind=icon}
 "Viking Valor"){kind=icon}
 "Dragons and Titans"){kind=icon}
 "Vorp!"){kind=icon}
 "Murloc RPG 2: Episode 1"){kind=icon}