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