SCP-079 can watch cameras at all times, and can look at what players are doing. Usually it's quite obvious if 079 is watching you, but there are occasions that you might not know if it is.
There’s an item called adrenaline which is an injection, as well as prescription pills in the game. There’s also an item called SCP-207 which is a drink that gives you a speed boost and kind of acts like a drug.
There are some minor blood effects when you get damaged as well as there being a corpse when you die. The zombies in the game also show some minor gore.