Destiny 2 has got its fair share of obtuse challenges and unclear objectives, but the infamous Secret Secrets bounty may catch you unaware for how unconcrete it is.
Destiny 2 Secret Secrets is not, however, all that hard of a task, and though its description is as obtuse as they get, this shouldn't dissuade you from trying to complete it. Down below, you'll find out how!
Destiny 2 Hidden Objectives are most clearly referenced in the 'Secret Secrets' daily challenge, which tasks you with 'finding two secrets hidden around the Dreaming City' - though it doesn't tell you anything about where or what those secrets are.
In practice, any old "secret" will do. For example, many of the Ascendant Chests in the Dreaming City count as secrets themselves, so your best bet will almost certainly be to track a few of those down, crack them open, and have at it.
Do keep in mind that some Ascendant Chests may seem unreachable at first, but that's nothing that an item of Tincture of Queensfoil can't solve. Now that you know what this quest is all about, go out and get it done!