Quick Answer
You get Free Range by breaking the old Break Room door, digging upward, and bringing Chicken to the chicken-sign door. Use the Hammer on the old door, dig through Dirt, then switch to the Jackhammer when you reach Rock. Take Chicken through this secret exit instead of the normal big doors.
How do you reach the secret exit?
You reach the secret exit by opening the old Break Room door and digging upward behind it.
Break the old door with the Hammer
Use your Hammer to break through the old door in the Break Room. Go behind it and read the Clipboard clue. It points you toward the Dirt and tells you to keep going up.
Dig upward through Dirt
Dig through the Dirt behind the door, following the upward route. You are making a passage toward the exit above the Break Room. Keep going upward until you reach Rock.
Switch to the Jackhammer at Rock
Use your Jackhammer when Rock blocks your progress. The route changes material, so you need to change tools. Continue clearing the passage until you reach the door with the chicken sign.
Bring Chicken to the marked door
Catch Chicken and bring it through the Break Room passage you dug. Take it up to the door with the chicken sign. Bringing Chicken here triggers the escape ending and the Free Range achievement.
Why won't the chicken-sign door open for you?
You need Chicken at the marked door; reaching it alone does not open it.
The clue near the top describes a door that people could not open themselves. It also describes taking Chicken through the big doors instead. Once you find the marked door, bring Chicken up your tunnel.
Do not deliver Chicken through the normal big doors or follow the Holding Cell route for this ending. Bring it back through the Break Room and up to the secret exit.
How do you catch Chicken for Free Range?
You can corner Chicken and catch it before carrying it to the secret exit.
Cornering it is the easiest way if it keeps slipping away. Any catching method works; what matters is bringing Chicken to the marked door.
After Free Range, compare the crack game endings to check the other ending route.
FAQ
You need the Break Room tunnel and Chicken to complete this escape route.
The escape ending is called Free Range. The game counts it as ending two of two.
Break the old Break Room door with your Hammer, then dig upward. Switch to your Jackhammer at Rock. Bring Chicken to the door with the chicken sign.
You reach it above the Dirt and Rock passage behind the old Break Room door. Look for the chicken-sign door.
No. You must bring Chicken to the marked door to trigger Free Range.