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