Here is the full list of all 21 WazHack achievements.
The base game contains 19 achievements, and there is 1 DLC pack containing 2 achievements.
Kill 100 mobs with ranged wand attacks.
Sell 200 weapons, except arrows.
Make a wish as a female character.
Get to level 10 with 4 characters.
Win the game.
Make a wish as a male character.
Get any unique item.
Have 10 pets alive at once, not undead.
Get to level 10 with all characters.
Kill 1000 mobs with ranged wand attacks.
Pick up 1000 pieces of paper.
Find 10 different unique items.
Win playing the whole game in your underwear.
Win only eating meat and certain goos.
Win eating no meat and only certain goos.
Get every possible item.
Kill every mob type at least once.
Win the game with every character.
Win the game on Nightmare III above level 7.
Kill 4 mobs with a single ranged wand attack.
Kill 10 mobs with a single ranged wand attack.