Final One Standing

Time. It's a tricky thing. No one knows just how much time they left. It can be 100 years or 100 seconds. 12 hours or 12 minutes. No one knows. They were just given life and they have to spend their time while they can. But what if you avoid your expiration date? What happens? Are you now invincible or do you have the biggest target on your back. Or what if you just piss off the grim reaper, what then? What if you aren't careful and accidentally drop a coin? What happens if you're the last one standing in a pool of blood? What happens...?