Help! chapter6 mole underground.

[okuribito]

It is clogged up.
I am good nowhere.
All fences are closed and cannot go ahead.
I do not defeat all the enemies either.
Where should I go to?
In the place, a bottom is a place of the rivers of the lava.
The bridge is broken and cannot go ahead earlier.
A fence is closed, and all the other places cannot advance, too.
It is the place where it breaks a wall with the hand of the key, and it advanced from the place of the station of the train to earlier.
I cannot come back to of the station with the debris of a broken wall.
Please help it.
I am at a loss all day long.