Introduction:
The Angry Birds trilogy is a port of the first three Angry Birds games (Classic, Seasons, and Rio) to the PS3. This version adds animated backgrounds, animated cut scenes and 19 bonus levels.

You are given a set number of birds each level and have to smash all of the pigs in a level. There are different types of birds with different abilities, however, you do not get to choose what types of birds or what order they appear in. You will always get the same types of birds in the same order each time you play a certain level. You are given a rating of 1-3 stars after finishing a level based on your score. You also have the option of using the Mighty Eagle to skip a level. If you do, you are rated based on how much of the level you destroy.

Walkthrough:
Step 1 of the walkthrough needs to be done first. It will allow you to unlock the 2 trophies for the Mighty Eagle and let you skip levels you are stuck on. Then you will need to unlock every episode (Step 2). After that you can do the steps in any order.

Step 1 (Unlock the Mighty Eagle):
The Mighty Eagle is required for two trophies. However it must be unlocked. You unlock it by failing a level 3 Times in a row. Shoot birds backwards until you get the "Level Failed" screen, then press . After launching 10 birds backwards you will get Squawkward. After failing the level 3 times you will unlock the Mighty Eagle. After failing the level 10 times you will get Pig-Friendly.

By the end of this step you should have the following trophies:
Squawkward
Pig-friendly

Step 2 (Complete all of the levels):
When you start only the first episode of each game (Classic, Rio, and Season) will be available to play. As you get stars in an episode you will unlock the next episode (Stars earned in Classic Episode 1 will unlock Classic Episode 2, Stars unlocked in Classic Episode 2 will unlock Classic Episode 3 and so on). You will get between 1-3 stars when you smash all of the pigs in a level.

If you are stuck on a level you can use the Mighty Eagle to skip a level. You can go back to a level and complete it later for a higher score and earn more stars. There are 671 levels including 19 bonus levels. You unlock a bonus level and a trophy each time you get at least one star in every level of an episode.

Here are 3 Youtube playlists containing walkthroughs of the levels and the Golden Egg locations:

Classic: [ Register or Signin to view external links. ]
Seasons: [ Register or Signin to view external links. ]
Rio: [ Register or Signin to view external links. ]

Note: These playlists are not yet complete.

By the end of this step you should have the following trophies:
Completed Poached Eggs
Completed Mighty Hoax
Completed Danger Above
Completed The Big Setup
Completed Ham'Em High
Completed Mine and Dine
Completed Trick or Treat
Completed Season's Greedings
Completed Hogs and Kisses
Completed Go Green, Get Lucky
Completed Easter Eggs
Completed Summer Pignic
Completed Mooncake Festival
Completed Smugglers' Den
Completed Jungle Escape
Completed Beach Volley
Completed Carnival Upheaval
Completed Airfield Chase
Completed Smugglers' Plane
Worldwide Angry Bird

Step 3 (Get 3 stars in every level):
Improve your score on each level until you get 3 stars. The Golden Egg levels do not award stars.

By the end of this step you should have the following trophies:
Stardust
You are a Star
You are a Superstar
You are Elvis

Step 4 (Get 100% Mighty Eagle score in every level):
Once you unlock the Mighty Eagle, you can hold down to use it. You fling a can a sardines at the level and the Mighty Eagles swoops down and destroys the level and smashes all of the remaining pigs. You will get a score from 0-100% based on how much damage you do. If you get a score of 100% you will get a Golden Feather.

By the end of this step you should have the following trophies:
Tiny Eagle
Mighty Eagle

Step 5 (Unlock and complete all of the golden egg levels):
There are 62 Golden Egg levels in the game. (23 in Classic, 24 in Seasons, and 15 in Rio). Some are placed in levels and have to be hit with birds to unlock and some are unlocked by completing tasks. Getting 3 stars in all levels of an episode will unlock a Golden Egg, as will reading all of the help screens and watching the credits from start to finish. The Rio Golden Egg levels are unlocked by getting the Golden Egg in Rio level 6-13. (In the mobile and PC versions it is referred to as the Golden Beach Ball). Once the first Rio Golden Egg level is unlocked. Complete each Rio Golden Egg level to unlock the next.

Warning: Egg Collector is glitched. Make sure you get the Golden Mooncake pieces in Episode 7 of Seasons before using the Mighty Eagle in those levels. The Golden Mooncake pieces are found in the following levels: 9-2, 9-5, 9-9, 9-15, 10-2, 10-5, 10-12, 10-14

By the end of this step you should have the following trophies:
Egg Collector
Egg Guru
Egg Master

Step 6 (Clean up):
Get any trophies you have not yet unlocked. You can go into Options and choose Statistics to check your progress. It does not tell you how many Golden Feathers you have, but the episode select screens do.

Warning: Pointastic is glitched and will take 11-12 million points to unlock instead of the 10 million points in the description, however, I still got the trophy at around 20% game completion (percent according to the statistics in the options menu).

By the end of this step you should have the following trophies:
Angriest Birdiest
Squeak
Sniper
Bacon
Block Breaker
Block Annihilator
Woodpecker
Gravel Factory
Icebreaker
Pointastic
Splash of Flavor
River of Flavor
Blockpocalypse
Voyager
Wright Flyer
Spirit of St. Louis
Hyperefficient
Supper-Effective
Scramble