I was so spoiled by the game highlighting me the best path to the objective (unlocking the skills and meeting Orange) including circling the whole upper-left area just to learn running; plus the fact that it shows every skill point location and which aren't consumed, plus all the optional health/time upgrades...

So anyway, I was completely lost when it turns out that the whole middle of North area is dead end from below and dead end from above, and the stone door needs unlocking by touching all three beacons that are hidden behind other stone doors that are also locked by beacons in other explored areas, and those beacons aren't tracked anywhere and you don't know how many you found, which of them, where they are, that you've collected them all, that something is unlocked, and where that something is.

I was just backtracking through upper-left, and accidentally found out that the stone door has disappeared and the passage leads to ....yet another dead end in the upper area.

Am I missing some hints or arrows?