Here is the full list of all 43 Evil Wizard achievements.
Defeat Hailga, The Sorceress
Defeat Reniart, The Beast Tamer
Defeat Tizio, The Assassin
Defeat Axel Van Gibson, The Warrior
Defeat Remageht, The Hero
Complete the game
Make an enemy kill another enemy
Find all the rubber ducks
Throw Igor from the ladder
Upgrade your equipment for the first time
Add the first rubber duck to your collection
Collect a reward from Gregor
Upgrade the five elements
Release Ippo from his cage
Find the Rubber Downey Jr. and The Duck Knight rubber ducks
Find the Duck of War and Duck-117 rubber ducks
Ask the developers for a cheat code to unlock this achievement
Beat the Coliseum
Collect all the rewards from Gregor
Discover the full Dark Forest's map
Discover the full Dungeon's map
Discover the full Storeroom's map
Discover the full Patio's map
Discover the full Lab's map
Discover the full Roof's map
Discover the full Armory's map
Defeat Dr. J. Kill and Mr. B. Ceps
Defeat Black Flarewing
Defeat Definitely Not A Monster
Defeat Blaze, The Radiant Ruby
Defeat Gaia, The Growing Jade
Defeat Spike, The Frost Sapphire
Defeat Storm, The Sparking Quartz
Defeat Surge, The Vibrant Amethyst
Upgrade every piece of equipment to the max
Defeat a boss without taking damage
Open the laser door inside the lab
Kill 300 enemies
Execute 50 enemies
Kill 10 enemies by throwing them out of the battlefield
Discover the real video games' villain killer
Find the burial site
Find the Obi Duck Kenobi and Duck Vader rubber ducks