Grinch, The Cheats

In Downtown Whoville, you don't need the costume to get
past the sleeping policeman just tiptoe past him and the
cloak will be inside for future visits. Don't be concerned if you can't accomplish all missions
per level the game isn't linear, so in most cases you'll
have to visit other levels first to construct gadgets. In Who Dump, shoot the birds with the Rotten Egg Launcher
and they'll drop food. To open the safe in the Town Hall, shoot it with the Rotten
Egg Launcher it contains a blueprint for the Grinch Copter. Also in the Town Hall, on the bottom level, you'll find that
some of the rugs on the wall look different than the others;
pull them to find some blueprints.

Go to the bottom level of Town Hall and find the three rugs on the wall that appear differently than the others. Pull out the rugs to find the blueprints.

Destroy 2500 gifts and go to the top of Mt. Crumpit: Copter Race mini-game
Destroy 1500 gifts and go to the top of Mt. Crumpit: Pankamania mini-game
Destroy 750 gifts and go to the top of Mt. Crumpit: Spin 'n Win mini-game
Destroy 3000 gifts and complete 100% of the game. Look behind the bookcase in the workshop with the sleigh: Bike Race mini-game