Full list of all 70 LEGO Batman 3: Beyond Gotham achievements. It takes around 25-30 hours to unlock all of the achievements in the base game on Windows.
The base game contains 40 achievements, and there are 6 DLC packs containing 30 achievements.
Witness the 100% LEGO Stud Fountain
Turn on all Red Brick Extras at the same time
Play as Adam West
Set both Free Play characters as Ace the Bat-Hound and Krypto
Set both Free Play characters as Booster Gold and Blue Beetle
Transform from Billy Batson into Shazam!
Visit all of the HUB Lantern Planets
Set both Free Play characters as Poison Ivy and Harley Quinn
Complete any hub race as Green Loontern
Create a custom character
Play as The Riddler in the Batcave Trophy Room
Set both Free Play characters as Green Arrow and Green Lantern
Jump on bouncy objects 50 times
Transform Bane into Bane (Venom-Powered)
Set both Free Play characters as Bat-Mite and Mr. Mxyzptlk
Knock out your buddy on the planet Nok
Find and destroy a hidden doughnut on a hub planet
Find a gang of jumping cows on the Moon
Visit the Moon Base in the Hub
Complete Bonus Level - Same Bat-time! Same Bat-channel!
Find and destroy a hidden Riddler Trophy
Play as Batman (Zur-En-Arrh)
Glide continuously for 10 seconds
Find the hidden celebrity party
Complete Level 15 - Breaking the Ice
Complete Level 14 - Aw-Qward Situation
Complete Level 10 - A Blue Hope
Complete Level 13 - Need for Greed
Complete Level 9 - Power of Love
Complete Level 11 - Jailhouse Nok
Complete Level 12 - All the Rage
Complete Level 8 - Big Trouble in Little Gotham
Complete Level 7 - Europe Against It
Complete Level 6 - The Lantern Menace
Complete Level 5 - The Big Grapple
Complete Level 4 - Space Station Infestation
Complete Level 3 - Space suits you, Sir!
Complete Level 2 - Breaking BATS!
Complete Level 1 - Pursuers in the Sewers
Attain ''True Hero'' status in any level
Complete Man of Steel level with all Minikits unlocked
Play as Krypto in the Man of Steel level
Complete Man of Steel level
Complete Man of Steel level after achieving True Hero status
Set both Free Play characters as General Zod and Superman (Man of Steel)
Complete Batman 75 level with all Minikits unlocked
Complete Batman's special Anniversary Dance Puzzle as Batman (1966)
Complete Batman 75 level
Complete Batman 75 level after achieving True Hero status
Set both Free Play characters as Batman (Sinestro Corps) and Vampire Batman
Complete the Dark Knight level with all Minikits unlocked
Complete the Dark Knight level
Complete the Dark Knight level after achieving True Hero status
Defeat Batman (Dark Knight Trilogy) as the Joker (Nurse) character
Set both Free Play characters as Bane (Dark Knight Rises) and Scarecrow (Batman Begins)
Complete Arrow level with all Minikits unlocked
Defeat 20 enemies on the Island by using a bow and arrow weapon
Complete Arrow level
Complete Arrow level after achieving True Hero status
Set both Free Play characters as John Diggle and Felicity Smoak
Complete The Squad level with all Minikits unlocked
Complete any hub race using Harley Quinn's Motorcycle
Complete The Squad level
Complete The Squad level after achieving True Hero status
Set both Free Play characters as Amanda Waller and Harley Quinn (The Squad)
Complete Bizarro level with all Minikits unlocked
Complete Bizarro level
Complete Bizarro level after achieving True Hero status
Play as Darkseid on the Moon
Set both Free Play characters as Darkseid and Desaad