Keys - Treasure Chests
T1 TF, AVP & WE - Tarnished Key
T2 Gpblin Cave, Manor & Ghaldassii Ruins Treasure Chests - Copper Key
T2 Upper HC Treasure Chests - Celestium Key (Upper)
T3 Lower HC Treasure Chests - Celestium Key (Lower)
T3 Mad Run Treasure Chests - Web-covered Key
T3 Hanggore Treasure Chests - mainly Carved Bone Key & Brass Key (not for all)
T3 EP, SP Treasure Chests - Brass Key