Here is the full list of all 51 Divinity: Original Sin 2 - Definitive Edition (EU) trophies - there are 42 bronze, 5 silver, 3 gold and 1 platinum.
Complete all trophies in Divinity: Original Sin 2 - Definitive Edition
Purge Rivellon of all Source
Share Source with all of Rivellon
Ascend to Divinity
Complete the game in Tactician Mode
Complete the game in Classic Mode
Complete the game in Explorer Mode
Complete the game in Story Mode
Complete the game in Honour Mode
Share Divinity with the Doctor
Defeat Adramahlihk
Successfully walk the Path of Blood
Persuade Toyseller Sanders to give you his amulet
Rescue Arhu
Obtain Anathema
Kill a God
Craft the Swornbreaker
Become The One arena champion
Swear to the Covenant
Discover the hidden entrance to the Academy
Enter the Academy
Convince all party members to let you ascend
Awaken the corrupted Ancestor Tree on Bloodmoon Island
Free Saheila without fighting the Lone Wolves
Unlock your third Source Point slot
Perform successful surgery on Natalie
Become champion of the Driftwood Arena
Unlock your second Source Point slot
Destroy every Voidwoken egg in Reaper's Cove
Take the ferry to Bloodmoon Island
Adopt Peeper
Tame Featherfall
Kill Andras, the necromantic dog
Correctly answer all of Crispin's questions
Help free Mari from the Voidwoken
Meet Meistr Siva
Lockpick your way into Mordus' hidden lair
Receive Dorotya's kiss
Serve Garvan the tainted stew
Arrive at Reaper's Coast
Escape Dallis' siege on the Lady Vengeance after killing every minion
Escape Dallis' siege on the Lady Vengeance without killing every minion
Take command of the Lady Vengeance
Defeat Alexandar in Fort Joy
Kill Radeka
Remove your Source Collar
Become champion of the Fort Joy arena
Escort the Black Cat out of Fort Joy
Flee Fort Joy for good
Force Dallis to retreat from combat in Fort Joy
Escape the kraken's clutches