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