Act IV - Preparing the Time Machine | Walkthrough Quantum Break Guide
Last update: 03 June 2016
Talk with Beth. There are three hidden secrets in the restaurant: there is a board, and you may also want to check the scheme that Beth is studying. Investigate the radio recording behind the door (once the conversation is over, you may open it).
Go and meet with Sofia, she is by the time machine. There is a Chronon Source on the left. Use the ladder and head upstairs to check the machine. Do that and climb the steel construction to reach the restart button above the machine.
Go right and talk to your companion. Don't forget to check the laptop, turn on the TV and collect the Quantum Ripple. Other secrets scattered around are: a scheme drawn with a pen, Will's diary and a poster (their locations may differ, and it depends on whether Amy or Nick is your companion).
Walk through the white door and a cut scene will begin. After a dialogue between Jack and Amy (you will unlock Distant Mirror) you can collect Will and Jack's photo from the previous room, Beth's notes and Chronon Source from the toilet (follow Beth to the second toilet and take it from the wall).
Get on the construction and move towards the pool to activate the correct switches and start the machine. Use the trampoline to get higher and reach the button. Use Time Vision, to collect the nearby Chronon Source.
Go downstairs to Dr. Amaral, use the terminal and enter the machine. You will see a cut scene and complete the level. You will also unlock Take That Trip.