Here is the full list of all 10 Never give up! achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
WE'RE TOO DIFFERENT
I'M STAYING WITH YOU
OUR FIRST LOVE
MY LOVE SHOULD STAY SECRET
I'M LEAVING SO YOU CAN BE HAPPY
TOGETHER FOREVER
OUR FUTURE TOGETHER
MAKE THE FIRST MOVE
MEET EACH OTHER HALFWAY
PLANS FOR THE FUTURE