Here is the full list of all 156 Lost Ark achievements.
Clear 20 Abyss Raids without using Battle items
Reach Combat Lv. 60
Unlock all of your Stronghold
Upgrade 5 ships to Lv. 10
Earn 100,000 or more Silver with a single sale
Participate in a Guild Raid
Track 400 waypoints on Secret Maps
Win in Team Deathmatch without losing any teammates
Discover the Burning Ice
Win in Team Deathmatch by at least 10 more kills than your opponent
Salvage treasure 500 times
Use a mining bomb and fail to blow up any ore 100 times
Reach Manor Level 5
Reach PvP Tier 10
Win 500 matches in the Proving Grounds
[Team Elimination] Win 100 times
Throw 100 commemorative coins in Atropos
Clear a Guardian Raid without anyone in your party dying
Collect a Diamond Chest from Dimension Cube (normal)
Defeat Field Bosses: Chuo, Vulkan, Casrick, Maneth
Reach item level 1300
Enter 200 Ghost Ships
Clear Twilight Chapel within 11 minutes
Defeat Field Bosses: Black Chicking, White Chicking, True Batuark, Gorka Grosse, Savnak, Erasmo
Solve the mysterious murder case in Feiton
Clear a Cube stage with less than 5% HP left
Complete Dispatch missions at SS 50 times
Use the Portal in a legendary secret dungeon with no kills
Find an item after a humpback whale jumps 77 times
Kill 240,000 monsters
Fuse Gems into Lv. 5 or above 100 times
Clear Boss Rush Stage 1
Take Selfies in Yozmund, Distorted Island, Phantom Island, Phantomwing Island, Shadow Moon Market, and Shangra
Defeat Field Bosses: Rudric, Salt Giant, Roblom, Wili-wili, Caspiel
Earn 500 Cooperation Bonus Points yourself
Collect a Diamond Chest from Elite Cube (normal)
Take Selfies on Goblin Island, Island of Mist, Medeia, Lush Reed Island, and Asura Island
Take Selfies on Aiwana Island, Peyto, Gravis, Lagoon Island, Revelry Row, and Gesbroy
Earn a total of 4,000,000 Silver by selling items
Take Selfies in Argon, Sunflower Island, Liebeheim, and Island of Azure Wind.
Recruit 60 crew members
Collect 30 Torches scattered throughout Werner's Grand Manor
Eavesdrop on hushed whispers exchanged in Shadow Moon Market
Destroy the huge golden peach in Shangra
Complete 100% of Adventurer's Tome: Yorn
Buy 7 Legendary items from the Wandering Merchant
Drink handcrafted beer until you get drunk
Complete all Co-op quests in Gesbroy
Pick 500 Mokoko Seeds
Collect a Diamond Chest from Cube (normal)
Clear a Cube Stage as the last surviving player
Clear 50 Guardian Raids by singlehandedly inflicting at least 50% of the damage it takes to clear
Use Town Transportation in Stern, Changhun, and Vern Castle
Follow Armen's Tracks
Feel five essences of Taoist energy hidden across Shangra
Feel ten essences of Taoist energy hidden across Shangra
Clear 500 Guardian Raids
Defeat Gold Chicking in Alaker
Take a screenshot on Starkeep Island
Trade 200 maps
Trade a map for the first time
Complete the Platinum Field alone
Inflict at least 75,000 damage in a single battle
Participate in a Guild PvP match
Pick 4000 mushrooms
Complete 100% of Adventurer's Tome: Rohendel
Spend 1,000,000 Silver repairing gear
Complete 500 Daily Quests
Successfully dismantle 30 Legendary or better items
Kill Vrad
Defeat Tarsila
Attack an enemy while disguised as a prisoner
Complete 100% of Adventurer's Tome: Shushire
Win 10 duels by forfeit
Win 10 duels without taking any damage
Win a duel by forcing the opponent out-of-bounds 100 times
Use the Ship Horn 10 times
Complete To the Nest quest in North Vern
Clear a Chaos Gate without dying
Clear 100 Chaos Gates
Clear a Chaos Gate in a group of 30
Use 10 awakening skills
Discover Pirate's Peg Leg
Complete 100% of Adventurer's Tome: North Vern
Play Sheet Music 900 times
Try smelting 1,000 times
Reach Fishing Lv. 50
Complete 1000 Co-op Quests
Complete Co-op Quests with 15,000 players
Reach Item level 575
Repair 300 items at 0 durability
Use a healing potion with 1 HP left
Enter a secret dungeon in a 4-person party
Enter 200 secret dungeons
Die while riding a hover board
Complete the Heart of Sceptrum quest in Arthetine
Reach Excavating Lv. 50
Win 200 duels
Opponent declines 25 or more duels
Change a ship’s name
Give 200 Affinity gifts
Complete 100% of Adventurer's Tome: Arthetine
Use 10,000 materials for item crafting
Reach Foraging Lv. 50
Reach Mining Lv. 50
Reach Hunting Lv. 50
Complete 100% all Adventurer's Tomes
Win the Anikka Tournament
Throw a machete and hit prey while Search is active 15,000 times
Complete 100% of Adventurer's Tome: Anikka
Switch to Skill Tree Tier 3
Complete Peace of Mind quest in Tortoyk
Find an island
Complete 100% of Adventurer's Tome: Tortoros
Play for 500 total hours with a character
Enter a port
Make your maiden voyage on the Sea of Gienna
Get 30 Legendary items by crafting
Equip an Ability Stone
Successfully facet 150 times
Open the 5 Doors of Choice at Lastra Forest
Obtain your first Ark
Complete 100% of Adventurer's Tome: East Luterra
Reach Logging Lv. 50
West Luterra: Stop Scherrit's plan
Make 50 Exchanges with a wandering merchant
Find the wandering merchant
Learn 9 pieces of Sheet Music
Collect 100 or more titles
Play an instrument for an Affinity NPC
Complete Crown of Lakebar quest in West Luterra
Complete 100% of Adventurer's Tome: West Luterra
Complete 250 Sudden Quests
Put 500 cards in your catalog
Obtain 200 treasure maps
Find the 5 secret locations in the Morai Ruins
Activate 50 Triports
Complete 100% of Adventurer's Tome: Yudia
Kill 20 elite monsters
Sell 20,000 items
Resurrect after being dead for 4 minutes
Contribute to a Guild's weekly income
Apply 150 skill level changes
Complete a dungeon with a guild member
Perform 40,000 basic attacks
Join a guild
Meet a companion on your quest to find the Ark
Progress to an Advanced Class
Clear Chaos Gate without anyone dying
Equip Relic-rarity tools for all six Trade Skills
Collect a Diamond Chest from Cube (hard)
Collect a Diamond Chest from Elite Cube (hard)
Earn exactly 777 Silver from dropped loot
Reach Grandmaster in Competitive Match
Reach PvP Extreme 10
Singlehandedly eliminate all enemies in Team Elimination