In this entry, we head to the dump and shave the dump guardian, then build the Octopus Climbing Device.
It's time to enter the dump.
The ground with all of the blast marks is a minefield, basically making the floor lava. If you land on the ground full of blast marks, you'll be sent all the way back to the entrance.
You'll need the Rotten Egg Launcher, the Rocket Spring and the Slime Shooter for this part. The Rotten Egg Launcher will be used to shoot down all the mattresses that are suspended in mid-air so you can bring them down and use them as platforms. The Slime Shooter is used to disable the sentry robot at the entrance to the dump temporarily, allowing you to enter the dump proper. You'll have 60 seconds to get to the other side of the dump.
Once you've got access, however, you can't simply waltz in there. This is where the Rocket Spring comes in. You'll need to launch yourself from one platform to another with the Rocket Spring, and if you land on the ground with the blast marks at any point, you'll be forced to start over from the entrance, and you'll also have to re-slime the sentry robot. There are Rotten Egg plants near the entrance that you can refill with is, and there are a few in the dump itself for just in case.
When you get to the other side, you'll want to get to the orange hut to the side. You'll find another blueprint piece for the Octopus Climbing Device on the outside as well as the scissors on the inside. You'll need the scissors to shave the dump guardian.
At the big orange house, you can find another Octopus Climbing Device Blueprint piece as well as one of the four Hearts of Stone that the game has. When you enter the house, you'll want to sneak at all times, as you don't want to wake up the dump guardian. Be sure to look around the stairs for the last blueprint piece for the Octopus Climbing Device, then sneak up the stairs to get up to the dump guardian without getting caught. Sneak up to the dump guardian with the scissors to give him the shaving of his life and complete the shaving mission. Getting this done not only gets rid of the dump guardian, but it also gets rid of the sentry robot at the beginning of the area, so you'll never have to deal with them again.
If you want to check your work quickly and easily, summon Max with Select and have him run around. He can pick up collectibles and Rotten Eggs, so if you missed something, you can still grab it. The mines also don't hurt him. You're done in the dump, so step on the mines for a shortcut back.
With the Octopus Climbing Device, you can climb on certain walls by jumping into them and pressing Circle when the device is equipped. If the device activates, you can climb on it. From there, you can control The Grinch with the D-Pad, and you can pull yourself up a ledge by holding Up on the D-Pad and pressing Circle. If you press Circle while anywhere else on the wall, you will drop down. The device will constantly use rotten eggs the more time you spend on the wall, so you'll want to know where you're going and get there quickly.
With 750 giftboxes destroyed, you can play the Spin' n Win mini-game. There are three difficulties, and you have sixty seconds to swing from one end of the area to the other. If you get to the end, you don't win anything. This mini-game - and the other two you can unlock - are just for fun. If you fall at any point, it's back to the start.