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