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