Someone on the official forums pointed out that when the gargoyle is talking to drake...this is what he says.
you ought to think twice about stealing here, explorer. These tombs have already been plenty raided
you oughta think twice. A line common in past tomb raider games. Specifically underworld. Before she sets off to the island the ferryman says "You ought to think twice, I don't think there are any ruins to raid here"
I think its to big of a coincidence. It it obviously a reference to Tomb Raider.