The Walls of Poseidon are traps in the flooded passage of the Challenge of Poseidon.
God of WarEdit
They consist in large walls that move on a chain, they will impale Kratos if he comes in contact with them. Being stuck, he cannot move and is helpless as the walls carry him to a large grate and thus to an instant death. He must Swim Dash through the passageway to avoid getting stuck on the walls or hide in the crevices at the bottom of the vestibule if a wall comes close.