Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Dreamer (10 points): Complete a Dojo training session.
Unleash the Guru (10 points): Start a Co-op game.
Novice Collector (10 points): Purchase a store item.
Up, Up and Away (10 points): Catch an Umbrella Seed to the Old Man Mountains.
Avalanche! (15 points): Survive Momma Yeti's cave-in.
City Enforcer (15 points): Force your way through Warmachine to get into Bad City.
Chihoohoo's Test (15 points): Prove your worth to Chihoohoo in a rumble with his guards.
Luminescent Danger (15 points): Triumph over the dangers deep beneath the sea.
Dr. Maybee's Ultimatum (15 points): Make the tough choice when confronted by Dr. Maybee.
Heart of Gold (15 points): Collect a full heart container.
Hoarder (30 points): Purchase all the shop items.
Winning (40 points): Achieve a perfect status on every level.