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