The Signal
Complete the Tutorial
Abandoned Halls
Complete Chapter 1
Memories of Times Past
Complete Chapter 2
The Pursuit of Knowledge
Complete Chapter 3
The Eyes of Ara
Complete the Epilogue
The Light of Stars
The Altar
Unlock the door to the Altar of Night
Budgeting for Indies
Collect Christopher's scattered coin collection
Dreamscapes
Find Astra's missing paintings
Drei zwei eins
Reunite Alexander's lost action figures
Captured Moments
Assemble Clementine's scattered photo album
To All Who Made This Possible
Locate the Backer's Gallery Secret Room
Radio Silence
Turn off all of the Radios
Well Read: Scattered Thoughts
Read each of Christopher's journals, Clementine's scattered journal pages, and Astra's notes
Well Read: Amateure Astronomer
Read each copy of "The Edge of Infinity" and all "Wonders of Space" posters
Well Read: Travelers' Tale
Read each copy of Christopher's favourite book
Well Read: A Show of Support
Read each of the Backer's Books
A Vote of Confidence
Find Mike's lost coin collection
Consequences, Shmonsequences, As Long As I'm Rich.
Celestial Mechanics
Written In the Stars
Just Deserts
Locate Baron Contington's Hidden Trophy Room
The Ghost of Crazy Catherine
Locate Lady Catherine's Secret Room
Prost!
Locate the Mountain Bräu Brewery
Lights Out
Extinguish all of the blue Jack-'o-Lanterns during the Haunted Halloween seasonal event.
Fear Himself
Find a way into the Pumpkin Lord's Tomb during the Haunted Halloween seasonal event.
North Pole Postal Service
Find all of the children's letters to Santa during the Merry Mysteries seasonal event
A Perplexing Present
Open the gift during the Merry Mysteries seasonal event