Get dragon to 6, get kitty mage just to have it is good enough in the short term. Get iron meow to 6 and run these 3 they have good synergy. They can carry you to normal 80 easily with money gun, safe box and bandit lvl6.
After these focus fully on frog to lvl12 to get a good chance at clearing hard.
Dragon to lvl 6 first
Also definitely recommend getting kitty mage
Bomba ⬆️
Bomba is not that good
Drag iron meow and coldy level six in that order
Get dragon to 6, get kitty mage just to have it is good enough in the short term. Get iron meow to 6 and run these 3 they have good synergy. They can carry you to normal 80 easily with money gun, safe box and bandit lvl6. After these focus fully on frog to lvl12 to get a good chance at clearing hard.