Floor 1: The Neon Club

Rescuing Charles: Inspect the files on the whiteboard to find 'The End (5/8) - Robot Puppets'. Interact with the large life support device and then the computer. Read all files on the PC, especially the diagram on the far right, which is a clue for a code. Return to the far left and interact with the chain console control panel. Adjust the height of the coloured lamps to match the diagram seen on the computer: press the purple/orange button twice, the yellow/green button once, and the blue button twice. This will reveal stairs leading down. In the Secret Corridor, examine the courier clothes. Enter the doorway at the far left to find another secret room. Examine the diary, then head left and inspect the Beta Type Consciousness Transmission Device to find 'The End (6/8) - The Research Information of Consciousness Transmission Device'. Speak with Charles, then grab the Crowbar at the far right of the room. Use the Crowbar on the holding cell door to free Charles, unlocking 'The Story of Rescuing the White Mustache' Trophy/Achievement.

Decision Time: Return to the secret lab with Charles. The first question has no impact, but the second choice determines which of two Achievements you unlock. You cannot get both in one playthrough without reloading a save. One choice also unlocks an endgame File.

• Turn it off: Choosing to 'Turn off the equipment' unlocks 'The Liberation' Trophy/Achievement and 'The End (7/8) - The History Between Edward and Luna' File. Proceed to 'The Final Confrontation'.

Keep it on: Choosing to 'Leave the equipment on' unlocks 'The Benevolence' Trophy/Achievement. You will NOT unlock one of the new endgame Files. Proceed to 'The Final Confrontation'.

The Final Confrontation: Regardless of your choice, head back down to the secret room where you rescued Charles. There is no turning back once you descend the stairs.