What is Montresor going to do to Fortunato?

Hint 1 of 12:

Revenge.

Hint 2 of 12:

Punish with impunity.

Hint 3 of 12:

There is nothing you can do to stop it.

Hint 4 of 12:

This is, after all, someone else's nightmare.

Hint 5 of 12:

He intends to bury Fortunato alive!

Hint 6 of 12:

Follow through with Montresor's intention to murder Fortunato.

Hint 7 of 12:

Once Fortunato is inside the grotto, secure him so he cannot run away.

Hint 8 of 12:

Click and hold the chain on the left and drag it to the right.

Hint 9 of 12:

Now complete the wall that Montresor has started.

Hint 10 of 12:

Exit the grotto and turn to your left.