BS2 SL1 DLC3 Boss 3

Done without leveling up, taking any stat-up souls, or going into Chaos Dungeon.
Covenant is Margaret
Phase 1 and 2
1st Turn: Buff all your attack, defense and speed. Switch to Twin Swords and use NORMAL ATTACK. Switch to Wand of Creation and use MEAT SHIELD SPELL, then ABSOLUTE PRECISION, then PHALANX, and lastly GUARD. She attacks. Hope she hits your meatshield.
2nd Turn: Switch to Twin Swords and use NORMAL ATTACK, then switch to Wand of Creation and cast SOUL SHIELD, GUARD, and GRIT.
3rd Turn: Switch to Twin Swords and NORMAL ATTACK 3x. Then switch to Anchor and Use BERSERK.