The developers used key words for each area to help define what each environment would look like. The Maximum Security area was intended to look industrial Gothic, claustrophobic, retrofitted and like a bunker. The Medical Wing was meant to inspire horror, use metal work, employ verticallity and host more Victorian elements. The Catacombs aimed to feel oppressing, focus on the earth and use brickwork. This type of differentiation helped the team flesh out most of the levels and set pieces.