All Hearts Card Locations

[Symandria]

Two of Hearts – Ruins of Telaria
Three of Hearts – Veridia Lighthouse
Four of Hearts – Death’s Gauntlet
Five of Hearts – Lake Felnamia, unfrozen part
Six of Hearts – Silver door, Rimorgue Inn
Seven of Hearts – 5th Legion Airbase, left tower (Found at the end of a long windy detour.)
Eight of Hearts – Desert of Death (Found inside a cave during the outside maze with tons of cliffs.)
Nine of Hearts – Lake Felnamia, unfrozen part
Ten of Hearts – World’s End Cove, before switching on the waterfall (Inside inner cave.) (MISSABLE)
Jack of Hearts – Ruins of Telaria
Queen of Hearts – Silver door, lower level of Rimorgue Mineral Reserves
King of Hearts – Battle of Rimorgue, chest in southwest (MISSABLE)
Ace of Hearts – Kill Tinny at Barah Treden

Sources Used: https://www.gamezebo.com/2010/08/12/deadly-sin-2-shining-faith-walkthrough-cheats-strategy-guide/