"No more Nightmares" Is talking about the Nightmare animatronics in Five Nights at Freddy's 4. It could be directly talking about Nightmare or Nightmare Fredbear.
Just gotta glance
On the cam 2B. Then you get a little surprise... IT'S ME
Cam 2B is the camera with the Golden Freddy poster but if you don't know much about the game you'll be really surprised. "IT'S ME!" is a reference to the "It's me" hallucinations that increase when Golden Freddy is in the office.
"It's not worth losing sleep" Could be a nod to the fact that the game takes place at night, so the guards are losing sleep because they are the night shift worker.