Here is the full list of all 45 LEGO Star Wars: The Skywalker Saga achievements worth 1,000 gamerscore.
Collected all Minikits
Completed all 'Level Challenges'
Fully upgraded all of the character classes
Collected all characters
Completed all Galaxy Challenges
Completed all events on Dagobah, Mustafar, Utapau
Completed all of the events in the Galaxy
Collected 1000 Kyber Bricks
Completed all the GNK droid escort missions
Completed all races in the Galaxy
Completed all events on Ahch-To, Endor, Kef Bir and Exegol
Completed all events on D'Qar, Naboo and Pasaana
Completed all events on Kashyyyk and Kijimi
Completed all events on Coruscant, Jakku and Takodana
Earned 10,000,000,000 studs
Completed all events on Cantonica, Yavin 4 and Ajan Kloss
Completed all events on Bespin, Crait and Hoth
Completed all events on Geonosis and Tatooine
Collected every datacard
Completed all events on Kamino
Achieved True Jedi in every level
Completed all the Jawa's ''Faulty Droid'' missions on Tatooine
Created 25 disguises as a Hero character
Rode all creatures throughout the Galaxy
Used Jedi Mind Tricks to make 5 people fight simultaneously in the Cantina
Completed The Skywalker Saga
Completed ''Episode IX - The Rise of Skywalker''
Completed ''Episode VIII - The Last Jedi''
Destroyed 100 TIE fighters
Completed ''Episode VII - The Force Awakens''
Fully upgraded a character class
Completed ''Episode VI - Return of the Jedi''
Completed ''Episode V - The Empire Strikes Back''
Completed a flight level without dying
Completed ''Episode IV - A New Hope''
Collected all Minikits in a single level
Shot helmets off 50 enemies
Defeated 3 enemies at the same time with an explosion
Completed ''Episode III - Revenge of the Sith''
Completed ''Episode II - Attack of the Clones''
Completed ''Episode I - The Phantom Menace''
Achieved True Jedi in any level
Achieved a combat multiplier score of 30
Completed all 'Level Challenges' in a single level
Earned 17,000 studs