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