Here is the full list of all 38 Wedding Witch achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Master the curse magic 10 times.
Master the projectile magic 10 times.
Master the explosion magic 10 times.
Master the familiar magic 10 times.
Master the areal magic 10 times.
Collect 100 flowers.
Dodge 100 times.
Achieve a victory with less than 10 damages dealt to the witch.
Achieve 10 or more victories in any difficulty.
Drink maximum amount of the Beast Potions.
Drink 10 beast potions.
Clear Nightmare Wedding difficulty.
Drink maximum amount of the Muscle Potions.
Master the melee magic 10 times.
Lose 10 ore more times in any difficulty.
Drink maximum amount of the Small Breasts Potion
Drink 10 small breasts potions
Drink maximum amount of the Hips Potions.
Drink 10 hips potions.
Drink maximum amount of the Big Breasts Potions.
Attacked by the Guardian of the seal 10 times.
Clear Hard Wedding difficulty.
Drink maximum amount of the Corruption Potions.
Drink 10 corruption potions.
Critical attack occurs 1,000 times.
You killed 20,000 devils!
Drink 10 muscle potions.
Drink 10 big breasts potions.
Recover health 100 times.
You killed 10,000 devils!
Clear Normal Wedding difficulty.
Achieve one victory in any difficulty
Use 100 skills
Open 100 pumpkin boxes.
Move 1,000 meters in the game.
Get damages 100 times.
You lost for the first time.
You killed 1,000 devils!