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.
Defeat Taffy 5 times
Unlock 9 outfits
Unlock 50 arcana
Defeat a boss without taking damage
Defeat Frost Queen Freiya
Defeat Earth Lord Atlas
Defeat Flame Empress Zeal
Complete the Tutorial
Enter the Chaos Trials in co-op mode
Defeat Master Sura
Land a 50 hit combo on any boss
Unlock 99 arcana
Unlock 50 relics
Unlock 99 relics
Hold 999 chaos gems at one time
Destroy 99 paintings during the Chaos Trials
Clear the Chaos Trials in 25 minutes
Hold 4 cursed relics
Unlock 3 chaos arcana