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