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