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