Hi! Thanks for letting us know how it went. We're working on a walkthrough and probably release it in a couple days, just to see if another player comes through with some answers. If not, we'll put it in a dev log post here.
If you'd like a hint until then, I can say: keep your head up and make sure there's enough light to see. You should definitely find them :)
And to explain the hints a little better. With hints enabled, you're able to ask your partner "HINT" in the banter window. Also, exiting a puzzle (padlock, candle, etc.) will give you a couple hints about said puzzle starting from the third time you leave (just to give the player a chance to figure it out on their own). Disabling hints removes these opportunities for help.
Thanks again for playing!