Sheep Happens
Complete the Chapter: "The Three Heroes - Pontius"
But It Belongs in a Museum!
Complete the Chapter: "The Three Heroes - Zoya"
I Like Turtles
Complete the Chapter: "The Three Heroes - Amadeus"
Stop Busting My Walls
Complete the Chapter "Academy Outskirts"
Graduated With Honors
Complete the Chapter: "The Astral Academy"
A Day as a Bookworm
Complete the Chapter: "The Chronicles of the Guardian"
Timber!
Complete the Chapter: "The Redwood Forest"
K.O.
Beat the final boss
A Friend of "Poetry"
Complete the Chapter: "A Forgotten Parchment"
An Itch for the Shiny
Complete the Chapter: "A Brush with Death"
No School Today
Complete the Chapter: "A Wizard's Nightmare"
I Dreamed a Fireball (almost)
Complete the Chapter: "A Wizard's Epiphany"
Holey Moley!
Complete the Chapter: "A Tumble Down"
An Exit Strategy
Complete the Chapter: "A Lonely Knight"
The King of the Jungle
Survive through the Chapter: "A Squabble in the Jungle"
The Academy Champion
Survive through the Chapter: "An Academic Invasion"
The Conqueror of Dangers
Survive through the Chapter: "A Dangerous Outing"
The Silencer of Whispers
Survive through the Chapter: "A Whisper of Evil"
The Three Heroes - Pontius, Perfected
Collect each Trineangle from the Chapter: "The Three Heroes - Pontius"
The Three Heroes - Zoya, Perfected
Collect each Trineangle from the Chapter: "The Three Heroes - Zoya"
The Three Heroes - Amadeus, Perfected
Collect each Trineangle from the Chapter: "The Three Heroes - Amadeus"
Academy Outskirts, Perfected
Collect each Trineangle from the Chapter: "Academy Outskirts"
The Astral Academy, Perfected
Collect each Trineangle from the Chapter: "The Astral Academy"
The Chronicles, Perfected
Collect each Trineangle from the Chapter: "The Chronicles of the Guardian"
The Redwood Forest, Perfected
Collect each Trineangle from the Chapter: "The Redwood Forest"
All Your Collectible Are Belong to Me
Collect each Trineangle from every Chapter
The Story Has Been Told
Complete all of the main story Chapters
Icing the Cake
Earn every Achievement in Trine 3: The Artifacts of Power