WHERE'S THAT STRANGE ISLAND?

is there more to it or not? because in the video and screenshots it looks like a windwaker ripoff.

You say Hawaiian folklore, but it caught my attention and I'm seeing "Tail of the Sun" in this as well, which is a game about Narcoleptic cavemen which had something similar.

It's all in the title, what can i do for have this achievements ?

It tells me do something then when i do it it doesn't move onto the next step. The bubble breaks briefly then regens then I i died because of attacking it..