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