Here is the full list of all 48 Battle Chasers: Nightwar achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Finish the game on NG+
Start NG+
Complete the Fishiary
Kill C'drall
Complete 100% of the Bestiary
Craft 50 items
Craft 10 Epic Items
Craft 10 Rare Items
Unlock 100% of the Lore Book
Complete all dungeons on Legendary difficulty
Defeat the Pirate Captain
Acquire all of the Heroes' Ultimate Weapons
Get all three chests in The Winding
Get Max Score in the Battle Arena
Craft a legendary item
Acquire 1 of the Heroes' Ultimate Weapons
Complete the Mana Rifts
Reach level 30
Unlock all Hero Skins
Unlock a Hero Skin
Kill all the Beastmaster's Targets
Complete the Crimson Garden
Acquire 100,000 gold
Unlock All Battle Bursts
Complete Strongmont
Acquire 200 Shadow Coins
Complete 50% of the Bestiary
Craft an item with less than 10% success chance
Get a Mid level score at the Battle Arena
Complete Deadwatch
Unlock 50% of the Lore Book
Kill 500 enemies
Bring Alumon into the party
Complete The Dig
Catch 50 Fish
Unlock a Level 3 Battle Burst
Kill one of the Beastmaster's Targets
Complete Junktown
Find Monika
Find Knolan
Complete a dungeon on Legendary difficulty
Complete the Path of Fangs
Catch an Epic Fish
Unlock a Beast Perk
Craft an item
Complete the Iron Outpost
Recover an item from the Mystery Cube
Make it to the road