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.
OUR FIRST LOVE
MAKE THE FIRST MOVE
WE'RE TOO DIFFERENT
I'M STAYING WITH YOU
MEET EACH OTHER HALFWAY
MY LOVE SHOULD STAY SECRET
OUR FUTURE TOGETHER
I'M LEAVING SO YOU CAN BE HAPPY
TOGETHER FOREVER
PLANS FOR THE FUTURE