Here is the full list of all 41 Help! I am REALLY horny! achievements.
Welcome to the world.
Did you take a screenshot?
I don't want to be lucky.
Well, you can forget all about heaven now.
Congratulations!
You are awesome!
Well done
Ho ho ho.
What were you thinking?!
You destroyed ALL the billboards!
Literally.
If you know, you know.
True love never dies.
Did you really think that undercover cop looked that hot?
You learned the truth.
Good for you.
Can you do that in other games?
How could you?!
We all have regrets!
Oh no, you didn't!
You're a true Don Jon.
It's not easy.
Oops, you did it again!
Are you Gene Simmons?
Well... Why?