Awesome! It's the best part of this series, I love it.
P.S: There's a little bug. [SPOILER DOWN THERE!]
If you blow up the lab first and "learn the truth" after it, you will be able to return to the lab and blow it up again, and you'll have 5 minutes left regardless of how many time you had before. I've just forgot to check the lab camera, so I guessed the last number of the door code (unlimited trials, a bug maybe...), and found it.