Here is the full list of all 46 Sackboy: A Big Adventure achievements.
Even Scarlet didn't get all the achievements, you're truly a Knitted Knight of legend.
Collect all the stickers in a single World.
Pick up and throw 30 of Vex's minions to their doom.
Find and pick up every fish, paintbrush and cocktail umbrella on your journey.
Pick up, and hold on to, a Boomblebee Hive for 60 seconds.
Find all of Gerald's secret spots.
Show off what you've learned and finish the Wonderplane's final challenge!
Get a Gold on the Knitted Knight’s ultimate trial.
Team up to take down the Topsy Turver.
Defeated Vex, destroyed the Topsy Turver and saved Craftworld!
Triumphed over the vile Vex at the very centre of Craftworld.
Cleaned up N.A.O.M.I's code.
Earn Gold on the scoreboard in 50 different levels!
Defeated the Bringer of Nightmares at the bottom of the ocean.
Ace 30 levels by completing them without dying.
Complete Highs and Glows... without throwing the Whirltool.
Stun 30 of Vex's minions.
Fill your wardrobe with 300 costume pieces.
Cleared the Colossal Canopy of its pest problem.
In multiplayer, high five with a friend.
In multiplayer, get the top score on the scoreboard 20 times.
In multiplayer, snag the most Collectabells in a level 20 times.
Over the course of your adventure, collect 3000 points while sliding.
Defeat 30 of Vex's minions from a distance.
Defeat multiple minions simultaneously 10 times.
In multiplayer, get gold in any Knitted Knight Trial while carrying another Sackperson.
In multiplayer mode, earn 10 Ace level goals.
Faced off against the Master of the Uproar on the Soaring Summit.
Pushed back the Uproar for the first time.
Defeat 30 of Vex's minions by bouncing on them.
Achieve all the level goals for 10 different levels.
In multiplayer, start a dance party with your friends.
Earn a Gold rank in any Remix level.
Create your own custom Emote in Zom Zom's shop then show the world.
Earn a Gold rank in any Knitted Knight Trial.
In multiplayer, save your fallen friends from certain doom!
Discover the Trials of the Knitted Knights.
In multiplayer, clobber one of your chums as the champ.
Collect a full chain of Timed Score Bubbles 30 times.
Complete your first Costume.
In multiplayer, complete a Teamwork Level.
In multiplayer, snatch an item from the clutches of another player.
While in the air, perform four actions before touching the ground.
Save a custom-made costume to your Wardrobe.
Get a golden level badge by completing all the Level Goals for a single level.
Simultaneously slap each other.