

Yes, I know I'm a bit late to the party, but I've recently played and 100% completed Donkey Kong Bananza. It was a fun experience, yet it was also very tedious at times. Anyways, you should be using this list as a 100% checklist (obviously), but feel free to use it however you like!
Amiibo is not required for this 100%.
DLC is required for this 100%. Purchase the "DK Island & Emerald Rush" DLC for $20 USD.
The DK Island area of the DLC actually doesn't have any Banandium Gems or Fossils, but it does have one cosmetic involving that pesky banana Fractone. There are limited-time Emerald Rush events with limited-time statues, but don't worry about them. It's out of your control.
To check off the boxes, make a spin-off or just copy it somewhere else. I don't care.
Enjoy!