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