Here is the full list of all 84 Ostrich Island achievements.
It's Halloween Time!
You walked on a beach with at least 3 chicks.
You completed the collection of beautiful Ostrich Island photos.
You finished the Game+ mode.
You have discovered every nook and cranny of Ostrich Island. You are the Master of this game.
You unlocked Brawler skill.
You survived on the cloud #11 for 5 minutes.
You unlocked Sprinter skill.
You collected all available bonuses on Tiny Island.
You have scored a goal with a lobster. Birds gonna get angry.
You sent home two chickens at once.
You destroyed a small army of bony fiends by dropping a tree on it.
You found the skin: Cheetah
You found Statuette of Alda, mother of Ostrich.
You took 50 photos.
You found the skin: Bamboo
You found all the hidden food on island six.
You have finished the game.
You found a fish in a mud!
You found the Bowler Hat
You mastered Co-op mode and finished with higher score several times.
You discovered The City Of Lost Chickens!
You destroyed over 50 trees on some island!
You found the Peaked Cap.
You found Statuette of Morgen, father of Ostrich.
You increased Eggs Converter Speed.
You joined Workshop, created a skin and gifted it to Ostrich Island Community.
You unlocked Score Collector ability.
You reached 50% mark on the way to the game mastery.
You found Statuette of Alarice, aunt of Ostrich.
You increased Eggs Converter efficiency.
You activated Eggs Converter.
You solved the tree puzzle on the first island.
You found the Cork Hat
You do like to play dirty, don't you?
You lowered a bridge without hitting it.
You found the Heart-Shaped Glasses.
You found a beautiful doll.
You found the skin: Cow
You found Statuette of Bathilda, sister of Ostrich.
You found the Elegant Hat.
You found the skin: Chicken
You unlocked Heavy Hitter ability.
You caught all the fish on the second island.
You found the location of Labyrinth.
You destroyed an idol without using a super power.
You found the skin: Black & White
You found the skin: Striped
You activated all portals on Island 4.
You found Statuette of Osrik, uncle of Ostrich.
You found the Cowboy Hat!
You found Statuette of Manfred, nephew of Ostrich.
You found the skin: Zebra
You found the Strange Hat.
You installed Water Control Device.
You unraveled the destiny of Giant Egg.
You found Statuette of Agmund, cousin of Ostrich.
You found the White Hat.
You fixed the broken portal before having fun.
You unlocked Jumper ability.
You haven't seen such an Egg before.
You found the Sunglasses.
You found a hidden bonus on the first island.
You scored a goal while playing with mangos!
You found the skin: Domino
You are the King!
You unlocked Sharp Vision ability.
You unlocked Fast Walker ability.
You found the skin: Tiger
You found the Hat of Sea Dog.
You collected the third Egg in a split second.
You collected two eggs in the blink of an eye.
You found Statuette of Dedrik, grandpa of Ostrich.
You found the Treasure Island.
You found Statuette of Egbert, brother of Ostrich.
You found the Green Hat.
You found the skin: Lizard
You caught 7 butterflies.
You unlocked Egg Master skill.
You have collected all eggs on some island.
You found Statuette of Dagna, niece of Ostrich.
You found the Photo Camera.
You completed the first island.
You found the Santa's Hat.