Here is the full list of all 12 Wallace & Gromit 2: The Last Resort achievements worth 200 gamerscore.
Flushed the evildoers and rode a rocket out of a vicious vortex.
Oh he said it! In all seven situations!
Solved the case of the criminal canines.
Put on a fabulous show!
Nearly burned the house down.
Pulled a Clouseau.
Put down a resort rebellion.
Offered tea to all your guests.
Had a spot of Cornish Yarg (Cornish Yarg!?).
Built a beach paradise.
Tried to sway Duncan with science - nice try!
Discovered the spare train tracks from Wallace and Gromit's adventure