Answer:
Look into my face and I'm everybody. Scratch my back and I'm nobody.
A skin have I, more eyes than one. I can be very nice when I am done.
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
A great mysterious place that the bold have been known to journey into.
A man shot two arrows at its center and missed both times, but using a sword swung once at its center and hit it twice.
What did the piece of wood say when he saw the screwdriver and screws approaching?