Full list of all 70 Angry Birds Trilogy achievements worth 1,500 gamerscore. It takes around 300-500 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 20 achievements worth 500 Gamerscore.
Complete Classic Episode 6 (without the Mighty Eagle)
Fail a level 10 consecutive times
Complete Classic Episode 4 (without the Mighty Eagle)
Complete Classic Episode 3 (without the Mighty Eagle)
Complete Classic Episode 2 (without the Mighty Eagle)
Unlock 5 Golden Egg levels
Complete Rio Episode 6 (without the Mighty Eagle)
Smash 5000 Ice Blocks
Clear out a level completely (without the Mighty Eagle)
Complete Seasons Episode 3 (without the Mighty Eagle)
Complete Seasons Episode 1 (without the Mighty Eagle)
Launch 5000 birds
Smash 5000 Stone Blocks
Smash 50 blocks with the first bird (before launching another bird)
Get 100% Eagle score in 5 levels
Collect 500 stars
Smash 1000 pigs
Complete Rio Episode 5 (without the Mighty Eagle)
Complete Rio Episode 4 (without the Mighty Eagle)
Complete Rio Episode 3 (without the Mighty Eagle)
Get 10,000,000 total points
Collect 10 Rio fruits
Complete Rio Episode 2 (without the Mighty Eagle)
Have 5 different birds in play at one time
Smash 5000 Wooden Blocks
Smash 5000 blocks
Complete Rio Episode 1 (without the Mighty Eagle)
Complete Classic Episode 1 (without the Mighty Eagle)
Send birds flying 100 km
Smash a distant pig with a direct hit
Make a bird fly 200 meters
Launch 10 birds backwards
Get 3 stars in any level
Finish a level with a single bird
Smash a pig
Get 3 stars in all levels in an episode
Get 3 stars in every single level
Get 100% Eagle score in every single level
Complete Classic Episode 5 (without the Mighty Eagle)
Complete Seasons Episode 2 (without the Mighty Eagle)
Complete Seasons Episode 4 (without the Mighty Eagle)
Complete Seasons Episode 5 (without the Mighty Eagle)
Complete Seasons Episode 6 (without the Mighty Eagle)
Complete Seasons Episode 7 (without the Mighty Eagle)
Complete all Episodes (without the Mighty Eagle)
Smash 100,000 blocks
Unlock all Golden Egg levels
Complete 10 Golden Egg levels
Complete all Golden Egg levels
Collect all Rio fruits
Make 500 birds swim
Complete Seasons Episode 10 (without the Mighty Dragon)
Complete Seasons Episode 12 (without the Mighty Eagle)
Complete Classic Episode 7 (without the Mighty Eagle)
Complete Seasons Episode 8 (without the Mighty Eagle)
Complete Seasons Episode 9 (without the Mighty Eagle)
Complete Seasons Episode 11 (without the Mighty Eagle)
Get 3 stars in every single level of Anger Management
Get 100% Eagle score in every single level of Anger Management
Get 100% Dragon score in all levels of Seasons Episode 10
Spawn 500 bubbles with Pink Bird
Complete Seasons Episode 15 (without the Mighty Eagle)
Complete Classic Episode 8 (without the Mighty Eagle)
Collect all Golden Wrenches in Classic Episode 8
Complete Classic Episode 9 (without the Mighty Eagle)
Complete Seasons Episode 13 (without the Mighty Eagle)
Complete Seasons Episode 14 (without the Mighty Eagle)
Get 3 stars in every single level of Fowl Tempered
Get 100% Eagle score in every single level of Fowl Tempered
Smash 1000 Ghost Blocks