Here is the full list of all 39 Star Wars Jedi: Fallen Order achievements worth 1,000 gamerscore.
Have a fully grown terrarium
Defeated 25 enemies while they are under the effect of Empowered Slow
Precision Evaded 100 attacks
Found all of BD-1's encrypted logs
Scanned all enemy types
Completed all of BD-1's holomaps
Collected all chests and secrets
Defeated an enemy using only kicks
Unlocked all Jedi skills
Found all of BD-1's stim canisters
Explored the crashed Venator
Discovered 75 Force Echoes
Defeated 20 enemies with explosives
Defeated an enemy with their own Slowed blaster bolt
Defeated four mysterious creatures
Completed the story
Opened the Vault
Defeated 3 enemies using a single lightsaber throw
Sliced an oggdo's tongue
Defeated each type of Bounty Hunter
Recruited all possible crew members for the Mantis
Hit a single enemy with all lightsaber types
Defeated a former Jedi Master
Defeated an enemy with a hacked droid
Crafted a lightsaber of your own
Parried 100 enemies
Defeated the winged terror on Dathomir
Defeated the Ninth Sister
Defeated an enemy by colliding them with another enemy
Completed the Tomb of Miktrull
Kicked a phillak that has kicked you
Sent 25 enemies over the edge
Freed the Wookiees from Imperial imprisonment
Defeated 50 enemies with reflected blaster bolts
Completed the Tomb of Eilram
Customized the look of Cal, BD-1, and the Mantis
Discovered the Bogano Vault
Fully customized your lightsaber
Joined the crew