Grab the milk and orange juice in the security room; these are powerful curatives. Swipe a fresh fire axe from the hall outside as well.
Before moving on, allow Chuck a moment to relieve himself in the Safe House’s restroom, which is right outside the security room (and also marked on your map). Save your progress and then return to the hallway.
Thanks to the guide arrow, finding the way out of the Safe House couldn’t be easier. Simply follow the tool as it leads you down the stairs near the restroom. There’s a ventilation shaft in the lower area; interact with its metal door to make Chuck crawl through.