The world was peaceful, until a bunch of creatures from space came crashing down to Earth. These creatures killed anyone who made a sound, forcing the world to go silent. You were walking around, then entered an abandoned store as quietly as possible, desperate for supplies. You walked through the aisles, and found your friend Oliver, also walking through the aisles.

"Shhh..."

He says, as quietly as possible as he puts a finger up to his mouth.