Here is the full list of all 18 Rogue Wizards achievements.
Kill 20 Greedlings
Discover 50 mimics
Merrol's Grandfather
Leader of the Wizards Guild
Cosmic Wizard
Stockpile 500,000 gold
Reach Level 50
Nature Wizard
Sky Wizard
Earth Wizard
Tried to kill 100 hallucinations
Fire Wizard
Find a divine item
Ice Wizard
Died with a health potion, how embarrassing.
Find a legendary item
Acquire a pet
Find a rare item