Run along the long pipe, then climb the large ladder. At the end you'll see... the light and feel a breath of freedom! Jump on the chain and prepare for a long climb. Use the pipe to get to the shaft, and you're character will once again find herself in the shafts. Unfortunately, there's some fighting left before you're able to win your freedom.
Once back in the shafts, pull back a plank and enter the tunnel. Proceed along it and climb the wooden notches, going past a new batch of the ship's guests. Enter the large room and jump from the roof to subsequent lanterns. Enter through the gap in the door and you'll find yourself in the dining hall.
For this section of the game you'll have to be extra cautious. Most of the guests will attack your character, attempting to eat her. That's why when crossing the locations here always be ready to dash away from danger. A good method is to employ a combination of sprinting and long jumps to cover the distance quickly.
Get past the creature gorging with meat and slip through a crevice. One of the guests will drop to the ground and begin to chase after you. Get away from him, because he's hungry - run across the room and jump for the last dash, getting yourself to safety. Phew... the creature is stuck in the passage, and you'll be safe for a moment.