Image: Rebel Wolves / Bandai NamcoOfficial screenshot from Rebel Wolves / Bandai Namco.
In the Nick of Time is a hidden gold achievement tied to the game's time limit. Keep an eye on the day counter, because a slow playthrough can lock you out of it.
Reach an ending that saves your family before the 30 days are up. Focus on main quests and avoid burning days on side content until you have it.
Keep manual saves in separate slots as you go. If you are also going for The Turncoat, reaching that ending inside the window covers this trophy as well.
Rescue your family before the 30 days run out.