For anyone worried that they need to max all skills before they can achieve a brilliant ratting this is not true. I compleated the game with all briliants at level 21. I found uping the skills related around meteor and mana very helpful. The skills related to tree cutting are also useful. @ Partybro40: the towers range/damage/speed percentages affect all towers not just the ones related to that race.
This maybe a dumb question but how do i get to the rocky island area? I beat all prior levels and can see the one now blue ones i am sposed to go to but there is no path there for some reason...