Blue Prints in Town Hall:

Go to bottom level and pull out three of the rugs on the wall, you will notice them from the size difference.

Open the Town Hall:

Shoot the clock with your egg launcher.

More Presents:

Shoot the kids with an egg launcher, presents will pop out of them and they will run away.

Secret Presents:

Behind the snowy walls there are at least two presents (you will need the rocket launcher found in level two). On top of the Whoville town Christmas tree there is another present.

Hammer & Chisel:

Go to City Hall and sneak past the guards to the room with the big cabinet in it. Use the Grinches strength to move the cabinet to reveal a safe. Use the jump attack to open it and then go across the hall and jump over the security poles to turn the alarm off.

Paint Bucket:

Go to the walkway along the building and follow it until you come to a pole. Swing on it to another pole and then on to a rafter. Knock the 'Who' off by using the jump attack and you will receive the paint bucket.

Powerful Breath:

When you are in city hall you can breathe on the alarm system to see the lasers.

Slow 'Em Down:

When you need to slime the Mayor's skis you can shoot the snow from the peak or on the side of the roof onto the dog to stall it for about 15 seconds.

Open Clock Tower:

To open the clock tower, you must use the springs to blast you up and pull open the hatch. From there you must work the gears to get to the next level of the tower.

Open Town Center:

Shoot the clock above the door.

Drooping Trees:

To make the trees droop in Who Forest, shoot the little guy with the flamethrower once and then quickly breath on the tree while he's stunned.

Key Card:

To get the key card, put all the bee hives in the houses and then they will open up. Go into the second house at the beginning and on the second level is a chest. Shoot the bees with the slime and quickly use the jump attack to open the chest and pick up the key card.

Glue Bucket:

To get the glue bucket in Who Forest, swing on the limbs and get to the top of the wall of snow. Then go towards the resort until you come to a ledge. Jump to it and break the ice open with the egg shooter. The glue bucket and egg plant are there.

Scout Costume:

Go straight ahead when you start at Who Lake, until you come to the part where you have to swing up the mountain. At the top, use your jet pack to blast up onto the roof and drop down the chimney. Breathe on the fat man until he tries to shoot you and then breathe on him again. Repeat this until he falls and then pancake him to get his shirt. Now he will charge so lead him into the wall by the dear head. Take his pants.

Power Plant:

To get to the Power Plant at the Dump, go to the blue tunnel and head straight to the place where the electric fences are. Shoot the two holes with the slime shooter to stop the shocker things. Now use the climbing device to scale the wall.

Turn Trees Black:

In the second level to make the trees turn black shoot the guys with the flamethrowers using the rotten egg lancher and then breath on the tree.

"Who" Kids Give Out Presents:

To get presents from the kids in the Who Forest that throw snowballs at you (the ones in the yellow jacket with the spiky hair) first breath on them. You must get very close first. They will flip upside-down in the snow giving you one present. Now butt-drop them & they will disappear, giving you a second present. This trick only works once.