The whole Level 2 list is hidden in it: broom, cauldron, scarecrow, skeleton, trick-or-treat, haunted house, jack-o’-lantern and the twenty-five words from Level 1. Words run across, down and diagonally.
The long ones are the useful ones. Finding jack-o’-lantern or trick-or-treat in a grid means having its spelling in mind letter by letter, hyphens included – which is more than any matching task asks for.