Answer:
Move a large pile of sand using tiny tweezers. Empty water from one well into another using an eye dropper. Use a needle to dig a hole through the cliff.
Explanation:
The faceless man asks Milo to move a large pile of sand using tiny tweezers. Then he asks Tock to empty the water from one well into another well using an eye dropper. Finally, he asks the Humbug to use a needle to dig a hole through the cliff.