Full list of all 71 LEGO Worlds achievements worth 1,345 gamerscore. It takes around 50-60 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 61 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 10 achievements worth 345 Gamerscore.
Collected a billion studs
Collected all the brick elements
Blew up another player with a ridden Dragon fire ball
Played all the musical note bricks within 10 seconds
Rode a Badger
Found the Legendary 1x3 Slope Brick
Found the Legendary 3x3 Corner Brick
Found the Legendary 2x4 Brick
Found the Legendary 2x4 Slope Brick
Found the Legendary 2x3 Slope Brick
Found the Legendary 2x3 Brick
Found the Legendary 2x2x3 Slope Brick
Found the Legendary 2x2 Slope Brick
Found the Legendary 2x2 Corner Brick
Found the Legendary 2x2 Brick
Found the Legendary 1x4 Slope Brick
Found the Legendary 1x2x3 Slope Brick
Found the Legendary 1x2 Slope Brick
Found the Legendary 1x2 Brick
Found the Legendary 1x1 Brick
Played the trumpet to an Elephant
Used the terraforming ability of all capable vehicles
Played bagpipes to a brown bull
Collected 100 Gold Bricks
Found and walked around a Town
Found all the Biomes
Chased down and rode a Sheep
Splatted a seagull with a paint-ball gun, while it was in mid-flight
Rode 4 different creatures within 60 seconds
Accumulated 10+ seconds of consecutive zip time with the grapple gun in one grapple session.
Achieved 5 consecutive seconds of vehicle air time (not including off the edge of the world)
Collected 80 Gold Bricks
Collected 65 Gold Bricks
Collected 60,000+ studs in a single streak (no more than 2 seconds between each stud collected)
Had 5 squirrels following you around at the same time
Had two tamed pets following at the same time
Defeated 7 enemies in a streak (with a maximum 12 second gap in between)
Found a Dungeon
Collected 50 Gold Bricks
Chased down and rode a Pig
Collected 40 Gold Bricks
Collected 30 Gold Bricks
Collected 25 Gold Bricks
Collected 20 Gold Bricks
Skydived uninterrupted from the highest point possible to the lowest point possible!
Took a picture of a posing character
Collected 15 Gold Bricks
Played an instrument next to another player playing a different instrument
Bounced on Lava 7 times consecutively
Bought something from the night Trader
Completed 15 seconds of consecutive climbing, jumping or back-flipping
Caught a Troublemaker
Rode a Shark on land
Dived continually for 3+ minutes
Found an item in a chest
Completed the Candy Construction Capers World
Collected 10 Gold Bricks
Completed the Prehistoric Peril World
Completed the Pirate Playground World
Collected 3 Gold Bricks
Started your Adventure
Shot 10 rockets from the mobile Rocket Launcher
Drove the Space Buggy and launched it into the air for 3 seconds
Played some lunar tunes on the moon with another player whilst using a different musical instrument
Player has taken Intergalactic Girl to the Classic Space Biome
Defeated 8 Large Space Spiders within 40 seconds
Collected Vampire & Lord Vampyre's Bride and placed them together in the Monsters castle
Created a single custom character, using a part from each of the new monster characters
Played a guitar solo in the Monster Biome stage area in front of the crowd
Staked a claim to Monster Town by playing as the classic Vampire character in the Monsters pack
Used the paintball gun to splatter paint on all the new monster characters