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