Full list of all 12 Banjo-Kazooie achievements worth 200 gamerscore. It takes around 12-15 hours to unlock all of the achievements on Xbox 360.
Complete all seven of Bottle's Secret Jigsaws
Defeat Grunty with Jinjonator
Complete Grunty's Furnace Fun, and answer any of the random questions correctly
Find Cheato three times
Collect all the honeycombs
Collect all 900 notes in the game
Learn all Banjo's moves
Chomp 30 red Yumblies
Free Clanker
Beat Nipper
Transformed by Mumbo for the first time
Collect 2 Jiggies