All members are rescued, the ship's been fixed, the dimension is collapsing, the entire map has been explored. However, the crew insists we "agreed" on finishing exploring the place. "Who knows what we'll find?"
Does the crew need all 20 trinkets to be convinced we've seen all there is to see of this collapsing time-space discontinuum, so we can move along and do whatever it is we were doing?
I do have 15/20 trinkets, but yes, the five missing trinkets are all the hard ones.
Best Answer
As someone who has managed to get all shiny trinkets, I can safely say you do need all of them to "finish" the game. The plot of the game is that, even though you've rescued your crew, and can ostensibly leave the collapsing dimension at any time, their home dimension is still in danger of collapsing like the one they were originally stranded in.
Without the shiny trinkets, your brave explorers can't guarantee a future for their dimension. In short, if you leave without all the shiny trinkets, it was all for nothing.
So chin up, face those 5 last trinkets like a gamer, and know that everyone I've spoken to has died the most on "Veni", "Vedi", or "Vinci" (the game keeps track!).
On the plus side, unlike super meat boy bandages, once you've got the shiny trinket you're free to suicide to get back where you were.