The Wardrobe: Even Better Edition

I got this in Chapter 1. Spoilers below.

After you awake the big guy in the alley, you'll have access to the front of the house where the van is.
In the middle of the walkway stands the squirrel; talk to him to add him to your inventory.
Now go to the worksite where the blind man is shouting orders to the workers; there's a yellow cement mixer on his left.
Put the squirrel inside the mixer and the achievement will pop up.

I believe you can earn this by trying with other methods, such as putting the squirrel in the microwave (located in the kitchen).