Full list of all 12 Banjo-Tooie achievements worth 200 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox 360.
Defeat Grunty in the final Battle.
Make a rainbow.
Bring Sabreman back to life.
Win a Colosseum Kickball final.
Shoot 20 Ulcers, Clinkers or mines.
Freeze all the octopi in the Lagoon.
Score 60 points in a Balloon Burst Challenge.
20 bad guys need to go.
Defeat Old King Coal Boss.
Separate Banjo and Kazooie or have Heggy hatch a Stop 'N' Swop egg.
Collect a Note, an egg, a feather and a Jinjo to get this.
Beat Klungo.