I've done all I could. What now?
Have you made sure there won't be any lights in the lighthouse today?
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Then all that remains is to travel back to the Present.
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Go back to the tiny PORTAL that brought you here.
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If you can't see it anywhere, it's because you have to look down.
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If you haven't done so already, pick up poor, wet Bear from the ground.
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Tap the portal and head home!