Here is the full list of all 25 SEX Tentacles [18+] achievements.
defeat Nova for the first time
lose for ten times
undress the characters 10 times
lose for the first time
increase specifications 10 times
defeat Blade for the first time
inflict 5000 energy damage with cells
recover 5,000 shield points
inflict 5,000 physical cell damage
restore yourself to 5,000 health cells
increase specifications 5 times
use the ability once
complete first level
defeat Trinity for the first time
complete all levels
defeat Blade and Trinity
lose for fifty times
use abilities 100 times
inflict 10,000 damage with abilities
restore 18,000 health with abilities
start a level with 4 boosters
pass level 20 without boosters 20
increase specifications 20 times
pump up all the features to the max
undress the characters 50 times