Half-Life: AoMDC

your name is David Lazaroff and you're addicted to a new painkiller from an unknown company. Marlangki coming to the hospital for help, you go to the toilet, where again taking these pills. However, instead of the usual effect, you lose consciousness and Wake up in a too familiar nightmare. A familiar world in an instant turned into a disfigured and full of scary creatures. Then, you Wake up in an abandoned hospital, where they begin to happen mysterious events. Now you have to go through all this horror, to find out what's really going on.