Astral Plane Breach is one of the collectible bundles in the Control Resonant Archives, with 12 documents and recordings tied to the Physicist in the quest The Underpass Resonant. Most of them are inside the Astral Plane, where three pillars around the door corridor hide the Astral Keys you need to reach his apartment. Here is where you find every Astral Plane Breach collectible, in the same order as the in-game menu.
Related Guides:
Underpass Exploration Collectibles
Jesse Faden Collectibles
Dig Site Threshold Collectibles
Evacuation Efforts Collectibles
Subway Maintenance Collectibles
West Incursion Records Collectibles
Underpass Accounts Collectibles
Prime Candidate Program Collectibles
Ordinary AWE Collectibles
Control Resonant Game Guides & Collectibles Hub
1 – Physicist’s Log #1
Quest: The Underpass Resonant
Location: Underpass
Collectible Category: Astral Plane Breach (1 of 12)
Description: The Physicist discusses how nobody but him understands his work.
Physicist’s Log #1 is right next to The Spire Fast Travel door in the Underpass.
2 – Physicist’s Log #2
Quest: The Underpass Resonant
Location: Underpass
Collectible Category: Astral Plane Breach (2 of 12)
Description: The Physicist discusses his newfound sense of clarity.
On the way to the Underpass Resonant, get past the blocked passage with the spiked floor fight. After the Board, the strange voice that follows Dylan around, speaks to him, Physicist’s Log #2 is on the floor.
3 – Physicist’s Log #3
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (3 of 12)
Description: The Physicist discusses the practical challenges of his work, but is interrupted by a neighbor.
Reach the corridor with the door and go to the pillar on the left of the door. Follow the red floor to a room with an Astral Key mission marker. Physicist’s Log #3 is next to the TV, in the same room as A Collections Letter.
4 – Physicist’s Log #4
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (4 of 12)
Description: The Physicist discusses his dreams and his family.
Physicist’s Log #4 is behind the locked door in the door corridor. You open it with an Astral Key from one of the three pillars around the corridor.
5 – Physicist’s Log #5
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (5 of 12)
Description: The Physicist discusses newfound challenges in navigating his apartment.
This is one of the hardest ones to find. Go to the pillar at the far end of the door corridor and climb to its highest point, where a couple of corridors branch off. Look for the shift downward that takes you onto the ceiling. Physicist’s Log #5 is in a dark area with a TV. The Astral Key box is on the other side of this area, also on the ceiling.
6 – Physicist’s Log #6
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (6 of 12)
Description: The Physicist discusses extradimensional fauna’s suitability for petlike purposes.
Physicist’s Log #6 is in the same area as the Investigate the Astral Plane mission marker, where you get an Astral Key, next to the bedroom with the four loot boxes.
7 – Physicist’s Log #7
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (7 of 12)
Description: The Physicist discusses changes both in his immediate environment and his future standing.
Collect the three Astral Keys from the three pillars around the door corridor and open the three doors, one after the other. They lead to the Physicist’s apartment. Physicist’s Log #7 is on the table to the right, together with the Rejection Letter.
8 – Physicist’s Log #8
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (8 of 12)
Description: The Physicist discusses love, and concludes that it is real.
Physicist’s Log #8 drops after you defeat the Physicist, the Underpass Resonant.
9 – A Collections Letter
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (9 of 12)
Description: A collections letter from a creditor.
Reach the corridor with the door and go to the pillar on the left of the door. Follow the red floor to the room with an Astral Key mission marker. A Collections Letter is on the desk, in the same room as Physicist’s Log #3.
10 – Letter From Howie
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (10 of 12)
Description: A letter from Howie Stanlov.
Letter From Howie is on the left side table in the Physicist’s apartment.
11 – Rejection Letter
Quest: The Underpass Resonant
Location: Astral Plane, Underpass
Collectible Category: Astral Plane Breach (11 of 12)
Description: A letter from an Ithaca University professor.
Rejection Letter is on the right side table in the Physicist’s apartment, together with Physicist’s Log #7.
12 – Astral Plane Observations
Quest: The Underpass Resonant
Location: Oldest House, Downtown
Collectible Category: Astral Plane Breach (12 of 12)
Description: An FBC report on the current state of the Astral Plane.
After you defeat the Physicist, Astral Plane Observations is at the entrance to the Oldest House in Downtown.
About Control Resonant
Sequel to: Control (2019)
Release: September 24th, 2026
Developer: Remedy Entertainment
Publisher: Remedy Entertainment
Official Website: https://www.remedygames.com/
