[Spoilers] Secret achievements

[EZSPECIAL]

Any idea on how to get
- Dream no more
- Hollow Knight
- Passing of the age
- Happy couple
- Witness

Hollow Knight I'm guessing is ending the game without doing the Abyss.
The other ones I have no clue, looking at the badges for the achievements doesn't tell me a lot. For Passing of the age I remember seeing a dried up mushroom that looks like the badge.

[ferriruiz3]

Originally posted by EZSPECIAL:

@AuburnRDM try to meet Cloth in Ancient Basin and see if she moves to Dirtmouth, the achievement description says "Allow the Nailsmith to find a new occupation", so I'm guessing you need to fully upgrade the Nail and not kill the Nailsmith with it. I'd say figuring stuff out with Cloth comes before dealing with the Nailsmith though.

So it's 100% sure that one of the members of the couple is the nailsmith? Yeah, go meet Cloth now! Maybe she pops up at Dirthmouth! Oh I would love to be right in my theory :D

[EZSPECIAL]

Achievement description was probably taken using Steam API
https://achievementstats.com/index.php?action=games&achievementId=258502

Seems pretty confirmed that Nailsmith is one of the necessary elements.

[AutumnApproaches]

Originally posted by Nomyamoto:

I think happy couple is when u get nail max upgrade then dont kill the guy, maybe u have to save the girl in fungal wastes too its pure speculation based on describtion I found https://achievementstats.com/index.php?action=games&achievementId=258502

I've figured it out. After you get the final Nail upgrade and skip out on killing the Nailsmith, you'll find him with Nailmaster Sheo. Talk to them to get the achievement.

[`Shadop]

Happy couple is the Nailsmith in "love of art" with the Nailsage (the Martial Master that has change is way of life in the Art, in the... Greenpath if I remember).
But you'll have to perform this in a specific way.
You'll have to meet end talk every dialog of the Nailsage BEFORE finishing the "Pure Nail" (the one that require 3 Pale Ore to be made). Then you come back to the Nailsage and... surprise :)

Don't know if anyone has already answered for the OP but Hollow Knight CANNOT be triggered if you're too far in the game and if you've already completed the "Void Heart".
if you talk to Hornet before entering the Black Egg. You'll trigger either Sealed Siblings or Dream no more, but Hollow Knight will be unreachable at this point. Once that if the game has auto save or if you've made a save the game will consider the speech activ.
(The event that put Hornet here is to acquire/complete the charm "Void Heart". So be careful and do the "Hollow Knight" end before performing the next 2 ends)

[Virgin]

Happy Couple - After crafting the Pure Nail, don't kill the Nailsmith. Go to the Nailmaster in Greenpath.
Witness - Beat Uumuu, go to Blue Lake
Passing of the Age - ♥♥♥♥♥♥' Mushrooms

[Dwurogowy]

Originally posted by EZSPECIAL:

I got the "Sealed Siblings" ending, can I go get "Dream no more" with that save?

You noticed that in the end of the fight the hollow knight had some familiar particles coming out of his head ? Hit him with the dream nail to trigger the real boss of the game