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 four mysterious creatures
Unlock all Jedi skills
Complete the story
Join the crew
Discover the Bogano Vault
Complete the Tomb of Eilram
Complete the Tomb of Miktrull
Open the Vault
Free the Wookiees from Imperial imprisonment
Defeat the Ninth Sister
Explore the crashed Venator
Defeat the winged terror on Dathomir
Craft a lightsaber of your own
Defeat a former Jedi Master
Defeat 50 enemies with reflected blaster bolts
Parry 100 enemies
Defeat 20 enemies with explosives
Defeat an enemy with a hacked droid
Send 25 enemies over the edge
Defeat an enemy by colliding them with another enemy
Hit a single enemy with all lightsaber types
Recruit all possible crew members for the Mantis
Fully customize your lightsaber
Scan all enemy types
Defeat each type of Bounty Hunter
Discover 75 Force Echoes
Kick a phillak that has kicked you
Collect all chests and secrets
Complete all of BD-1's holomaps
Defeat an enemy using only kicks
Defeat 3 enemies using a single lightsaber throw
Defeat an enemy with their own Slowed blaster bolt
Precision Evade 100 attacks
Defeat 25 enemies while they are under the effect of Empowered Slow
Slice an oggdo's tongue
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