Green Bird hint:
To more effectively use the green bird/boomerang bird, simply launch it backwards and tap before it goes off the screen so it can launch like any other bird.

Sound board:
To unlock the Sound Board, earn 3 stars on every level in worlds 1-3

Golden Eggs:
Find the following Golden Eggs by performing the corresponding tasks:

GOLDEN EGG – HOW TO UNLOCK
Golden Egg 01 – Get 3 stars in worlds 4-5
Golden Egg 02 – Tap the sun on the select screen
Golden Egg 03 – Tap the egg at the end of the credits
Golden Egg 04 – Go to the help screen and tap the egg at the end
Golden Egg 05 – In Level 1-8, tap the out of reach chest
Golden Egg 06 – In Level 2-2, bust the beach ball
Golden Egg 07 – In Level 4-7,tap the egg at the very top right of the map
Golden Egg 08 – In Level 5-19, on the top right of the left tower
Golden Egg 09 – In Level 6-14, bust the yellow balloon
Golden Egg 10 – In level 6-14 bust the yellow balloon in the lower right corner
Golden Egg 11 – In theme 8’s level page, brush the screen right to left to reveal a golden egg
Golden Egg 12 – Get 3 stars for every level in Danger Above
Golden Egg 13 – In level 8-15 break the boxes in the far left corner
Golden Egg 14 – In level 9-14 fire the boomerang bird at the hat on the far right side of the screen on the small cliff.
Golden Egg 15 – Bust the rubber duck in the bottom left side In 10-3
Golden Egg 16 – Get three stars on all levels in the Big Setup

Trophies:

Bronze trophies
Bacon – Smash 1000 pigs
Block Breaker – Smash 5000 blocks
Blockpocalypse – Smash 50 blocks with the first bird (before launching another bird)
Completed Airfield Chase – Complete Rio Episode 5 (without the Mighty Eagle)
Completed Beach Volley – Complete Rio Episode 3 (without the Mighty Eagle)
Completed Carnival Upheaval – Complete Rio Episode 4 (without the Mighty Eagle)
Completed Danger Above – Complete Classic Episode 3 (without the Mighty Eagle)
Completed Easter Eggs – Complete Seasons Episode 5 (without the Mighty Eagle)
Completed Go Green, Get Lucky – Complete Seasons Episode 4 (without the Mighty Eagle)
Completed Ham’Em High – Complete Classic Episode 5 (without the Mighty Eagle)
Completed Hogs and Kisses – Complete Seasons Episode 3 (without the Mighty Eagle)
Completed Jungle Escape – Complete Rio Episode 2 (without the Mighty Eagle)
Completed Mighty Hoax – Complete Classic Episode 2 (without the Mighty Eagle)
Completed Mine and Dine – Complete Classic Episode 6 (without the Mighty Eagle)
Completed Mooncake Festival – Complete Seasons Episode 7 (without the Mighty Eagle)
Completed Poached Eggs – Complete Classic Episode 1 (without the Mighty Eagle)
Completed Season’s Greedings – Complete Seasons Episode 2 (without the Mighty Eagle)
Completed Smugglers’ Den – Complete Rio Episode 1 (without the Mighty Eagle)
Completed Smugglers’ Plane – Complete Rio Episode 6 (without the Mighty Eagle)
Completed Summer Pignic – Complete Seasons Episode 6 (without the Mighty Eagle)
Completed The Big Setup – Complete Classic Episode 4 (without the Mighty Eagle)
Completed Trick or Treat – Complete Seasons Episode 1 (without the Mighty Eagle)
Egg Guru – Complete 10 Golden Egg levels
Egg Hunter – Unlock 5 Golden Egg levels
Gravel Factory – Smash 5000 Stone Blocks
Hyperefficient – Finish a level with a single bird
Icebreaker – Smash 5000 Ice Blocks
Pig-friendly – Fail a level 10 consecutive times
Scramble – Have 5 different birds in play at one time
Sniper – Smash a distant pig with a direct hit
Spirit of St. Louis – Send birds flying 100 km
Splash of Flavor – Collect 10 Rio fruits
Squawkward – Launch 10 birds backwards
Squeak – Smash a pig
Tiny Eagle – Get 100% Eagle score in 5 levels
Woodpecker – Smash 5000 Wooden Blocks
Wright Flyer – Make a bird fly 200 meters
You are a Star – Get 3 stars in any level

Silver trophies
Block Annihilator – Smash 100,000 blocks
Egg Collector – Unlock all Golden Egg levels
Egg Master – Complete all Golden Egg levels
Mighty Eagle – Get 100% Eagle score in every single level
Pointastic – Get 10,000,000 total points
River of Flavor – Collect all Rio fruits
Stardust – Collect 500 stars
Supper-Effective – Clear out a level completely (without the Mighty Eagle)
Voyager – Launch 5000 birds
You are a Superstar – Get 3 stars in all levels in an episode

Gold trophies
Worldwide Angry Bird – Complete all Episodes (without the Mighty Eagle)
You are Elvis – Get 3 stars in every single level

Platinum trophy
Angriest Birdiest – Earn all Bronze, Silver, and Gold trophies.