Firmament

Awarded when all other trophies have been unlocked

Raised spire in Curievale

Raised spire in St. Andrew

Raised spire in Juleston

Engaged the Embrace in Curievale

Engaged the Embrace in St. Andrew

Engaged the Embrace in Juleston

Got the Distance Extension upgrade

Got the Concatenated Socketing upgrade

Got the Amplified Force upgrade

Solved the dive suit puzzle in Curievale (trigger when you get to the airlock at the end)

Visited The Swan for the first time

Visited St. Andrew for the first time

Visited Juleston for the first time

Powered the furnace in Curievale

Crushed some ice in Curievale

Dropped five ice blocks with the skiff in Curievale

Picked up an ice block with the HUG

Added the missing piece to the skiff puzzle in St. Andrew

Accessed the elevator in the conservatory in St. Andrew

Called the Camelus for the first time

Lowered the water in the reservoir in St. Andrew

Lowered the water in the reservoir in Juleston

Completed the game

Triggered every Mentor speech

Read every document in Firmament

Explored the bunker in Juleston