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

One Small Bite for Mousekind (10 points): Clear any stage with a rank of A or better.
Gastronomy Graduate (20 points): Complete the single player campaign.
Ultimate Gastronomist (25 points): Clear all stages with S rank.
Gourmet Duo (15 points): Win a match in Live Team Match.
Chomp Champion (15 points): Take a total of 10000 bites in the single player campaign.
Crikey! (20 points): Use boomerangs to make a 3-combo-hit on your rival in single player campaign.
Chubby Mouse (15 points): Build a 100 Bite Chain.
Crazy Skill (15 points): Clear Stage 16 by eating up all 3 foods without using any item.
Satiated (15 points): Score 3500 points in a single player level.
Champion (15 points): Get first place in a tournament match.
World Food Party! (20 points): Complete 50 Live multiplayer matches.
The Sweet Taste of Victory (15 points): Get first place in a ranked match.