So watching it again, I LOVE how the game is turning out. Just a couple of things I would like to improve a bit.
A new animation for the double jump. It looks kinda weird and dull, seeing the same jump again after the first jump.
Yooka's voice sounds great, but his mumbling during dialogue trees is a bit off... Stabilising the pitch a tiny bit, and shortening each of his voice clips as he speaks would make him sound better, because at the moment, the very end of each of his mumbles are constantly interrupted by new ones every time his opens his mouth, and it's kind of annoying. They're too drawn out for now. Make them shorter!
Other than those too, I have no other complaints. Looks amazing.