Level Skip:
     Go to the gadget screen and press X while holding R1.

How to avoid the lasers on the statue:
     Unlock  the  lasers  on  the statue in the City Hall by using the
Grinch's bad breath.

City hall:
     To get into City Hall shoot the big clock and the door will open.

Mini Game Access:
     Destroy  the  following  number  of presents to get the indicated
mini game. Go to the upper level of Mount Crumpit to play the games.

750 presents - Spin N Win Mini Game
1,500 presents - Pankamania Mini Game
2,500 presents - Copter Race mini Game
3,000 presents - Bike Race Mini Game 

The Different Gadgets:

Binoculars - whoville - 4 blueprints
Rotten egg launcher - whoville - 4 blueprints
Rocket spring - whoforest - 9 blueprints
Slime shooter - whoforest - 9 blueprints
Octopus climbing device - the dump - 9 blueprints
Marine mobile - wholake - 16 blueprints
Grinch copter - every level - 16 blueprints