Resolution 3: Reveal All Your Secrets
Let’s not even play around with this — Nate absolutely has another secret that he’s keeping from Elena about his past. That’s not just a law of Nathan Drake’s character, it’s also part of Uncharted’s internal logic. Whether it’s about someone else that he totally pissed off or left for dead, or that guy he borrowed $20 from and never paid back, there’s likely some deep and dark plot point that he’s withholding from his family that’ll inevitably come back to bite him in the ass.
The smart thing for him to do would be to sit his family and best friends down and hash things out over a couple of hours, just to avoid any surprises. But Drake won’t do that. No, he’ll likely be cryptically stingy on details until he recovers from a near death situation. And then he’ll be surprised when people are upset with him. So just do it, Nate. Tell them anything that may be relevant to who you are as a character.