Intruders

An hospital outside a town was mysteriously abandoned a few years ago and the local council has ordered the hospital to be demolished in the early hours of this morning.
There have been reports of alarms sounding at night from inside the hospital and the initial investigation team disappeared for an unknown reason.
You have heard that a YouTube director who investigates paranormal activities has organised an urban exploration before the hospital is demolished. For your own personal reasons, you asked if you could join as part of his film crew.
You only have 90 minutes to sneak into the hospital to discover why the hospital was abandoned before the demolition crew arrives.