Here is the full list of all 15 Please Be Happy achievements.
Begin Chapter Two
Begin Chapter One
Begin Chapter Three
Begin Chapter Four (Aspen Route)
Begin Chapter Four (Juliet Route)
Begin Chapter Five (Aspen Route)
Begin Chapter Five (Juliet Route)
Achieve Aspen's Comfy Ending
Achieve Aspen's Wild Ending
Achieve Juliet's Comfy Ending
Achieve Juliet's Wild Ending
Put on a perfect performance with Lena
Landed a legendary catch with Mr. Kim
Made friends with Tommy
Get every (other) achievement!