Here is the full list of all 19 Wizard of Legend achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Hold 999 chaos gems at one time
Enter the Chaos Trials in co-op mode
Clear the Chaos Trials in 25 minutes
Hold 4 cursed relics
Defeat a boss without taking damage
Complete the Tutorial
Land a 50 hit combo on any boss
Defeat Flame Empress Zeal
Defeat Earth Lord Atlas
Defeat Frost Queen Freiya
Defeat Master Sura
Unlock 50 arcana
Unlock 99 arcana
Unlock 50 relics
Unlock 99 relics
Unlock 9 outfits
Defeat Taffy 5 times
Destroy 99 paintings during the Chaos Trials
Unlock 3 chaos arcana