Little tip. Don't waste your time trying to activate the pylons for the golem. Does not work, only gets you killed. Such BS. I downed a Maribor forest potionj and a Tawny owl. Mixed them one with all Negrido, one all Rubido so for the two potions you get increased Vitality regen, increase max endurance, increased dmg, and increased endurance regen. I spent an hour trying to get the pylons to work and ten minutes just killing the ♥♥♥♥♥♥♥♥♥♥ thing.... Oh, and plenty of fire sign :)

You need to sink some more time into Metro, it's quite nice.