100%'d the game just now, took less than 20 hours to do.
It's a cute little game with even cuter characters that makes you reminisce the Nintendo 64 days of Banjo-Kazooie and Banjo-Tooie.
Collecting things is the name of the game, if you're looking for deep storytelling or challenging gameplay, you won't find it here. The only thing remotely challenging are the Kartos minecart sections but those are a matter of timing and trial & error.

If I had any complaints, it's probably the bugs plaguing the game (I had no issues personally) and I would've loved a 6th world dedicated to Capital B specifically. It wraps up really fast once you fight him.

It's short, sweet and the movement is very seamless and satisfying.
Here's hoping we get a Tooka-Laylee!