You beat the game only when you find the chest named “The Lost Treasure”.
Opening inventory (“E”) and holding cursor over the item sometimes can give you more information about that item.
Carefully read all the books you find because they reveal the story and can help you where to go next.
The Pirate Map (screenshot section below) shows where to go next if you are lost and use it only if the books haven’t helped you, the map does not reveal all map destinations (it is just some help from the start of the game).
Keep your items, maybe some of them you will need later, you can drop some unnecessary food or some stones (at the certain time dropping items can help crossing the obstacle).
Difficulty - at least EASY.
Render distance - MIN 8 (normal).
Dynamic lights (optional) - FANCY (torch can help illuminating everything around player when held in hand in the night or dark place).
Resource packs - Any resource pack with realistic sky (recommended: Clouds-OFF, Stars-OFF).