Portal: Back to past | Part 4| Trailer [UPDATE]

Map Link: This map is a translation of portal 1 in the style of the old Aperture Science Innovators labs, containing 06 and 07 test chambers. Did you find the secret? This update fixes some bugs in the previous version of the map Discord: VK: Trailer soundtrack artist: Valve - Mike Morasky - Aperture Science Psychoacoustics Laboratory