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.
Collect all chests and secrets
Defeat four mysterious creatures
Unlock all Jedi skills
Complete all of BD-1's holomaps
Complete the story
Open the Vault
Explore the crashed Venator
Craft a lightsaber of your own
Defeat a former Jedi Master
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
Find all of BD-1's stim canisters
Have a fully grown terrarium
Find all of BD-1's encrypted logs
Customize the look of Cal, BD-1, and the Mantis
Scan all enemy types
Defeat each type of Bounty Hunter
Discover 75 Force Echoes
Defeat the winged terror on Dathomir
Defeat 3 enemies using a single lightsaber throw
Defeat the Ninth Sister
Slice an oggdo's tongue
Complete the Tomb of Miktrull
Defeat an enemy by colliding them with another enemy
Parry 100 enemies
Free the Wookiees from Imperial imprisonment
Defeat an enemy with a hacked droid
Fully customize your lightsaber
Defeat 50 enemies with reflected blaster bolts
Complete the Tomb of Eilram
Kick a phillak that has kicked you
Discover the Bogano Vault
Join the crew
Recruit all possible crew members for the Mantis