I have just a few questions,
1.

Need some help with this "Nibelungen" Boss?? I've found this mech here but im completely clueless as to what to do with it, I would appreciate any help.
2.
I also cant find the path to the boss -if there is one- in the Shallow Ruin Labyrinth, it feels like ive roamed around the whole place -expect the falls because it always causes me to die, if theres a safe way to deal with it please help me out- and haven't found anything interesting aside from the "ninja" women
3.

What am I supposed to be doing here, I'm completelyy lost here too, he just knocks and nothing else happens, is it a date or weather based event or smt as such?
For the shallow ruins Labyrinth, i managed to find the boss.