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