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