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