Answer:
Do what he says and you'll be fine, don't and you lose the game.
There is someone, and there is always another, for without the other, there wouldn't be one
A man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?
Always wax, yet always wane: I melt, succumbed to the flame. Lighting darkness, with fate unblest, I soon devolve to shapeless mess.
Iron on a mammal. Mammal on your feet.
What is lighter than what it is made of?