Utilizing Heavy Armor and Weapons and Miracles, You have a devoted Great Paladin
Gyrm Greataxe +10 (Lightning Imbued if desired), Best Chime possible (Upgraded), Drangleic Shield or King's Shield (Or any other Medium shield with 100% Damage Reduction).
Heide Knight set, Third Dragon Ring and Royal Soldier's Ring +2 (For mobility), do what you wish with the last two Ring slots, I used Ring of Steel Protection +2 and Heirs of the Sun Ring.
Sunlight Spear, Great Lightning Spear, Great Heal, Sacred Oath, and Sunlight Weapon.
Keeping Mobile, your Greataxe and thrash enemies, but don't get greedy with the swings. Your high faith and strength supports the Greataxe being Lightning Imbued, and the High Faith increases Miracle damage. Dodge, Swing/Cast, rinse and repeat.