How do you get into the lighthouse in Pokemon heartgold?

Answer 1

First, go into the lighthouse. When you get inside, take the stairs. Do not take the elevator; It will take you to the room Jasmine is in, but the door to the area she is in is locked. So take the stairs. Go up to the fourth, count them, fourth floor (The enterance floor is the first, the next is second, then third and then fourth). On the fourth floor, there will be no stairs to go up. On the right wall, however, there is shining light on the floor. This is a window you can walk through. Walk through and you will be outside. Walk through the next door (Be sure to grab that Rare Candy on the left of the tower). Go up two floors and you will be on a floor with a sailor and a guy with a bald spot (Stay against the left wall and you can fight the sailor, but avoid the bald guy by walking around the sailor) Go up the stairs, and you will be in the room Jasmine is in (The one with the locked door) She will ask you to get medicine from the pharmacy across the sea in Chinwood. She will unlock the door so you can go. Now just take the elevator down, leave, and sail to Chinwood.
you need to battle the sailors
For me it didnt seem that tough all i needed to do was walk thorugh the front door