Then no need even worrying about the doors if that's the only objective.
Ask each one if they're twins. Whoever says "no" is the liar. Game over and walk away.
Bruh, you're in the military. There are missions that have more than one objective, right? If that be so, then the same is true here.
Objective A: Determine the Liar
Objective B: Find the door that leads to Heaven.
On this mission, you can't do one without the other.
