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.
In multiplayer, high five with a friend.
Get a Gold on the Knitted Knight’s ultimate trial.
In multiplayer, snag the most Collectabells in a level 20 times.
In multiplayer mode, earn 10 Ace level goals.
In multiplayer, get the top score on the scoreboard 20 times.
Team up to take down the Topsy Turver.
Show off what you've learned and finish the Wonderplane's final challenge!
Find and pick up every fish, paintbrush and cocktail umbrella on your journey.
Defeated Vex, destroyed the Topsy Turver and saved Craftworld!
Triumphed over the vile Vex at the very centre of Craftworld.
Find all of Gerald's secret spots.
Collect all the stickers in a single World.
Complete Highs and Glows... without throwing the Whirltool.
In multiplayer, get gold in any Knitted Knight Trial while carrying another Sackperson.
In multiplayer, save your fallen friends from certain doom!
In multiplayer, start a dance party with your friends.
In multiplayer, snatch an item from the clutches of another player.
Simultaneously slap each other.
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.
Pick up and throw 30 of Vex's minions to their doom.
Ace 30 levels by completing them without dying.
Cleared the Colossal Canopy of its pest problem.
Pick up, and hold on to, a Boomblebee Hive for 60 seconds.
While in the air, perform four actions before touching the ground.
Stun 30 of Vex's minions.
Defeat multiple minions simultaneously 10 times.
Defeat 30 of Vex's minions from a distance.
Over the course of your adventure, collect 3000 points while sliding.
Faced off against the Master of the Uproar on the Soaring Summit.
Achieve all the level goals for 10 different levels.
Collect a full chain of Timed Score Bubbles 30 times.
Earn a Gold rank in any Remix level.
Earn a Gold rank in any Knitted Knight Trial.
Discover the Trials of the Knitted Knights.
Defeat 30 of Vex's minions by bouncing on them.
In multiplayer, complete a Teamwork Level.
In multiplayer, clobber one of your chums as the champ.
Complete your first Costume.
Create your own custom Emote in Zom Zom's shop then show the world.
Save a custom-made costume to your Wardrobe.
Pushed back the Uproar for the first time.
Get a golden level badge by completing all the Level Goals for a single level.
Fill your wardrobe with 300 costume pieces.