Welcome to my post and please help to understand what goes wrong.
I am playing the Tomb Raider Underworld and reached the mission on Jan Mayen Island, I reached the stairs to the room where should be the Mjolner, but no cutscene with Lara walking up there and no Mjolner in the room, there are also invisible barriers behind the statue in the room. So my question is what the hell is wrong? I did everything in order, except the gate of the dead, where I activated the beams of light without a specific order and after opening the lock on the Gate I have moved accidentally one ring that controls the beams of light and removes one beam, after that I just proceeded inside and that is what has happened in the end. Is there any specific strict rule for script to trigger the cutscene and to make Mjolner to appear where it should be?