I have been done with Egypt for some time now but still go back occasionally because I have never been able to get Cache to appear let alone open and I am still curious about how to open it. I am playing the mobile version on an iPad. I have returned to my completed Vault of Guardians to talk to Virides but all he says is, “I like treasure hunting.” What did I miss and is it still possible to open Cache even though I have completed Egypt?