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