Legacy Of Kain: Blood Omen 2
Start with Soul Reaver and Armor:
At the main menu, enter L1, R1, L2, R2, Square, Circle, Triangle. Then start a new game and Kain will have the Iron Armor from Legacy of Kain: Blood Omen and the Soul Reaver
Thanks to Revolution readers TKD_GrandMaster and Liam Cozzy!