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