Not a bad game, but get's unbalanced really quick. Enemies become way to strong after a few waves, and you don't get enough points per level to keep up with their rising HP and attack power. Even if this was possible, you would have to play the game several times to find the right combination of skills to upgrade - Even with your tip about upgrading the Golem, the game just gets to hard for it to keep up with more powerful enemy tides, while your character has to deal with flying enemies (and frogs) that bypass it. Because I have not gotten very far in the game, I can't say what is the best solution to make it more balanced. Maybe, reducing the strengthen and hp of some enemies, or giving higher attack points per skill upgrade for the Golem. Or more throwing axes than just one per upgrade point.... You just need to tweak the balance a bit, to make easier, and more enjoyable for the majority of players.