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, snag the most Collectabells in a level 20 times.
Team up to take down the Topsy Turver.
In multiplayer mode, earn 10 Ace level goals.
In multiplayer, get the top score on the scoreboard 20 times.
In multiplayer, high five with a friend.
In multiplayer, get gold in any Knitted Knight Trial while carrying another Sackperson.
Get a Gold on the Knitted Knight’s ultimate trial.
Find and pick up every fish, paintbrush and cocktail umbrella on your journey.
Pick up and throw 30 of Vex's minions to their doom.
Pick up, and hold on to, a Boomblebee Hive for 60 seconds.
Complete Highs and Glows... without throwing the Whirltool.
Find all of Gerald's secret spots.
Show off what you've learned and finish the Wonderplane's final challenge!
Collect all the stickers in a single World.
Earn Gold on the scoreboard in 50 different levels!
In multiplayer, clobber one of your chums as the champ.
In multiplayer, save your fallen friends from certain doom!
Ace 30 levels by completing them without dying.
In multiplayer, complete a Teamwork Level.
In multiplayer, snatch an item from the clutches of another player.
Simultaneously slap each other.
In multiplayer, start a dance party with your friends.
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.
Stun 30 of Vex's minions.
Defeated the Bringer of Nightmares at the bottom of the ocean.
Achieve all the level goals for 10 different levels.
Defeat multiple minions simultaneously 10 times.
Defeat 30 of Vex's minions from a distance.
Fill your wardrobe with 300 costume pieces.
Cleared the Colossal Canopy of its pest problem.
While in the air, perform four actions before touching the ground.
Over the course of your adventure, collect 3000 points while sliding.
Complete your first Costume.
Defeat 30 of Vex's minions by bouncing on them.
Faced off against the Master of the Uproar on the Soaring Summit.
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.
Save a custom-made costume to your Wardrobe.
Get a golden level badge by completing all the Level Goals for a single level.
Create your own custom Emote in Zom Zom's shop then show the world.
Pushed back the Uproar for the first time.