treasure

So, guys, I found out this bug: I was on the third map on Finder's mission and I couldn't find where was the treasure. So, I came back to the second treasure location and the X was still on the floor. I excavated the same spot and completed the third mission, so, you can, apparentely complete...

In mount bloom when entering the poison room where you scare the guard with mushrooms there is 2 caves. One in right for story mode and one on left is a posion room with breakable crystals in there. Has anyone gotten past it????