Polaris

Reach Dimensional Research: Claim the Foundation Control Point. Fast travel to the Ashtray Maze.

Navigate the Ashtray Maze: Follow the path, occasionally killing Hiss. Deal with moderate platforming and Hiss Charged. You'll acquire collectible entries for the Ashtray and Cigarette Objects of Power, Old Gods of Asgard: Take Control, and a Hotline entry for Slidescape-36. Emerge by a Firebreak.

Search for the Slide Projector Object of Power: In Dimensional Research, find the 'Janitor Complaint' folder on the X-ray machine and the 'Sand Memo' folder on a rack unit. Loot a nearby container. Claim the Dimensional Research Control Point.

Locate the Projector Room: Go up two flights of stairs, walk towards the illusion, turn around, and Levitate up to the platform on the left. Go down and Levitate across to a balcony. Go through the door to the Projector Room and hit the button on the wall.

View Darling Presentation: Continue through to the next room to view 'Slidescape-36'.

Follow Signs to Hedron Resonance Lab: Go through another door and follow the signs.

Acquire Research: Go through the door at the top of the stairs. Examine a folder on a bench for 'Slide Projector Tests' research. Find another folder on a desk for 'Hedron Containment' research.

Solve Cube Puzzle: Go to the control room and interact with the console to solve the cube puzzle. The solution is: right, right, right, left, up, up. This updates your objectives and unlocks 'Hedron' and 'Final Message' Darling Presentations.

Investigate the Hedron Chamber: Go back and ride the elevator down. Turn left to a large door secured with four bolts.

Prepare for Combat: The area beyond the door is difficult. Recommended mods: two Health Boosts and a Seize Accelerator. Consider switching to Shatter for close combat. Equip your preferred long-ranged weapon and damage bonus mods.

Breach the Door: Use Launch to remove the four bolts and proceed through the door.

Cleanse the Siphons: Kill the Hiss and cleanse the three structures beaming red energy at Hedron. After clearing the first three, Hedron will rise.

Cleanse the Fourth Siphon: Levitate to a platform on your left to cleanse another siphon. Destroy the Hiss Cluster providing healing.

Reach the Final Siphon: Use the rising pillar or Levitate across to the higher platform with cover. Be aware of a Sniper and a tough Hiss Trooper. You can snipe enemies from the previous platform, but beware of new spawns.

Cleanse the Final Siphon: Take down Hiss Warped and other enemies on the final platform. Cleanse the last siphon to update your objectives.

Reach Polaris: Levitate up the rising pillars to reach Polaris. This completes the mission and unlocks the Polaris trophy.