This is why I found Gris a little frustrating which lowered my opinion of it - it's really unclear which route is the main path and which leads to a secret, so you end up missing stuff.
It's also one of my gripes with The Impossible Lair - all those one-shot secrets that you have to either restart the level for or deliberately die immediately after to have another go at, with lots of mid-level gates to prevent backtracking - and it's not always clear where they happen.