I thought the boss was intuitive because it showed you how to beat it when it shot its self letting you know what to do. The instinct I got has to destroy the rest of them. The only shame i found in the boss is it didnt include the round about things but was a minor thing. And the consequence of death is pretty small in this game and I think thats the only way to learn how do beat the boss is by death. And much like the other levels they came with trial and error as well so my personal opinion is the boss was a great ending.