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