You should use: soul spear series, ghost spear series, and the passive from heuksal. Chain spear migh be useful, but only if you have sufficient SP>
As for the force, use fire imbue. Level the fire shield, flame body series and fire protection, and the passive, of course.
You should level lightning for the grass walk and piercing force.
Try reading up on some stickied glaive guides in this section
Hope it helps
