I'll probably do this in two parts - but here goes!
SPOILERS for Chapter 34:
First, this was a very intense, fast-moving chapter and I had to read it a couple of times myself to take it all in – and English is my native tongue! Second, my apologies to B in advance for anything I'm getting wrong - but here's may take on Chapter 34:
Okay, the parts written in blue? Those are the police regulations that Ennis must follow when he's in pursuit of a suspect (the "Game"). So we start off with Ennis identifying himself ("Police") and demanding that the suspect halt ("Freeze") as required by the rules. Throughout the chase, we keep getting a peek at these regulations as they apply to Ennis's pursuit of Hunnie. He orders all the innocent bystanders to get back in their rooms and then grabs the first official looking person he sees – a nurse- and shoves her into Jack's room to check on him. When Ennis is on the stairwell chasing Hunnie, Detective Lee from the NYPD (New York Police Department) finds him. This will be made clear later on when we get back to Jack's point of view. Ennis and Lee have a conversation consisting of single words (kind of a police shorthand) wherein Ennis learns that Det. Lee was with Jack when the nurse was shoved in the room, that Jack was "wasted" (high on morphine – which he already knew), that Det. Lee's partner was (supposed to be) with Jack,that Hunnie is suspected of killing nine people and is armed with a gun. At this point a bullet skims Ennis above the ear - he's hit and bleeding but not badly injured. Ennis is a floor behind Hunnie and when he comes out of the stairwell he can't find him
To make matters more complicated, Hunnie is wearing green "scrubs" – scrubs are the loose-fitting pants and tops worn by hospital staff so it's very easy for Hunnie to blend into the crowd. The security guard tells Ennis that all the exits have been secured , but now Ennis is in a panic knowing that if Hunnie is in green scrubs it will be easy for him to walk right into Jack's room and so he leaves Det. Lee to coordinate with security and he rushes off to Jack. While he's trying to get an elevator, he gets a call from Matt. Matt is from the computer Forensics department and he is the one that was trying to decode that computer chip that Ennis found (remember back – maybe two or three chapters ago). Matt has really bad news. The computer chip contains a program that can by-pass security programs through wireless internet (WIFI) and could literally bring the entire city to a standstill. Cut off all electricity, phone service, water, transportation systems – everything – all with a laptop computer. Just at that moment, everything goes dark in the elevator (Okay – hospitals have emergency generators that will kick into action so the hospital will not be without electricity, etc. - but Ennis needs to get out of that elevator – and from reading B's comments she has said that he will.)