Here is the full list of all 18 WILD SEX: WET GIRLS achievements.
Collect all barrels in game
Kill 30 enemies in mid-air
Finish the game without taking damage
Buy all the swords in the game
Die 10 times
Finish survival level
Finish survival level without taking damage
Take 30 enemy into the air
Treat yourself 20 times
Take 10 enemy into the air
Buy any sword
Make a combo with a pistol
Die 5 times
Kill the enemy in mid-air
Treat yourself 5 times
Break the bridge
Finish level with train (2 уровень)
Skip opening cutscene