Once you reached to end of the golf terrain you can enter a small path on the left (which eventually is the border of that golf terrain). Go all the way until a T crossing. If you go left you have to keep on “left-ing” whenever you can and you will end up Etretat village again. But if you that the right way, you should pass and cheese farm, where you could see how these things are made. I used “should” and “could” as I only got this info afterwards … damit ;-)
Once you passed the Chapel at the East of Etretat, you will find a sign telling you to watch out for falling rocks! There is a stairway that takes you all the way down to the sea ... and gives you the opportunity to carve the name of your loved one in the rocks...
As I told before, you can walk on the beach on low tide for at least 1hour straight. To know how, ask the old man in the corner of the street … and you will find “the path” :-)
.. or you can find more details in my "things to do" tips
If you continue on the trail over the Aval cliff you will eventually reach the Valleuses d'Antifer, after that Antifer beach and the lighthouse...