Here is the full list of all 12 CrazyMouse achievements worth 200 gamerscore.
Clear any stage with a rank of A or better.
Complete the single player campaign.
Clear all stages with S rank.
Win a match in Xbox LIVE Team match.
Take a total of 10000 Bites in the single player campaign.
Use boomerangs to make a 3-combo-hit on your rival in single player campaign.
Build a 100 Bite Chain.
Clear Stage 16 by eating up all 3 foods without using any item.
Score 3500 points in a single player level.
Get first place in a tournament match.
Complete 50 Xbox LIVE multiplayer matches.
Get first place in a ranked match.