Here is the full list of all 39 STAR WARS Jedi: Fallen Order achievements. It takes around 25-30 hours to unlock all of the achievements on Windows.
Defeat 25 enemies while they are under the effect of Empowered Slow
Precision Evade 100 attacks
Collect all chests and secrets
Unlock all Jedi skills
Complete all of BD-1's holomaps
Complete the story
Open the Vault
Explore the crashed Venator
Defeat a former Jedi Master
Defeat 20 enemies with explosives
Find all of BD-1's stim canisters
Find all of BD-1's encrypted logs
Scan all enemy types
Defeat each type of Bounty Hunter
Defeat four mysterious creatures
Recruit all possible crew members for the Mantis
Defeat 3 enemies using a single lightsaber throw
Defeat an enemy with their own Slowed blaster bolt
Kick a phillak that has kicked you
Defeat an enemy using only kicks
Have a fully grown terrarium
Hit a single enemy with all lightsaber types
Craft a lightsaber of your own
Defeat the winged terror on Dathomir
Discover 75 Force Echoes
Send 25 enemies over the edge
Defeat the Ninth Sister
Defeat an enemy with a hacked droid
Slice an oggdo's tongue
Parry 100 enemies
Complete the Tomb of Miktrull
Free the Wookiees from Imperial imprisonment
Defeat an enemy by colliding them with another enemy
Complete the Tomb of Eilram
Customize the look of Cal, BD-1, and the Mantis
Defeat 50 enemies with reflected blaster bolts
Discover the Bogano Vault
Fully customize your lightsaber
Join the crew