We’ll begin the game in the back of a boat being rowed to a lighthouse in the centre of the ocean. Once you arrive, use the interact button to climb the ladder to the floor to find a couple of silver eagles (the game’s currency), then it is time to exit and make for the lighthouse.
At the end of the dock, climb the stairs until you reach the door. You can follow the platform around to the left if you want some more money and a barrel to open. When ready, interact with the door at the top of the stairs.
Upon entering, you can interact with the basin in front if you like and check the back of the room for some more money and a loot-able barrel if you wish. Climb the stairs. On this floor are a cabinet to loot and a wallet under the bed containing a bigger sum of money. Head up the next flight of stairs. Here you’ll find a couple of coins on the bench next to the corpse and a barrel to loot near the next set of stairs.
Climbing the next set of stairs will take you to the very top of the lighthouse. We need to interact with the door here (although there is one final loot-able barrel if you continue all the way to the right). Once you have interacted with the door, booker will pull out a card. You need to ring the corresponding bells in the order given.
After a few moments, the door will open. Run over and interact with the chair to complete the prologue. Enjoy the view, it’s great!