This Seeking Tech guide will show you how to get the trophy/achievement called, “Which Came First, the Chicken or the Egg?”
This will unlock when you “let a chicken hatch, grow, lay an egg and see a new chick hatch.”
Use the following video as a reference:
To start off, head to the beginning of Stage 2.
When you head down the elevator, go right and destroy the crate on the right.
You should then destroy the crate that should dropped to the left. A tiny chick should appear. Stay on the same screen but avoid making contact with the chick.
The chick should eventually grow into a chicken and lay eggs, which should unlock this trophy.