Here is the full list of all 21 My Cute Fuhrer achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Awesome pic
Good pic
Start Girls Mode
You did it! You are hero!
Visit the moon base
Go to the forest
Stay overnight
You're doing fine
E
I
T
U
C
Little Heart
Helga
Go to visit
Beautiful uniform
Meet the Fuhrer
Fuhrer cap - 3 level
Beautiful legs
Start Story Mode