Answer:
I am between earth and heaven. What am I?
I am heavy forward but backward I'm not.
In a tunnel of darkness lies a beast of iron. I can only attack when pulled back. What am I?
Although it sounds like I work on a transportation device I actually work in a restaurant.
A single syllable do I claim black was my most famous name; Fetal to mortals here below thousands have I slain in a single blow.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic