How do you get to the final battle on banjo kazooie?

1. Defeat the witch Gruntilda in her first three boss battles. You will find Gruntilda in Spiral Mountain, Freezeezy Peak, and Gobi's Valley.

2. Collect all of the musical notes in the game. There are 100 musical notes in total, and they are hidden all over the game world.

3. Find and defeat Klungo. Klungo is Gruntilda's assistant, and he is hiding in Rusty Bucket Bay.

4. Defeat Grunty in the final battle. The final battle takes place in Grunty's Lair.