As you navigate and explore the facility, you will quickly find out that you are not alone there. There are many types of monsters and entities you will face as you try to escape from the facility alive. Some are passive and may help you as you explore during your playthrough and some are aggressive and will try to kill you on sight. There are also some that will put you in a mini game that you need to beat to survive. A few of the entities will have a lower chance of appearing than some, but should your luck be low, then expect to have quite a few close encounters.