Lets decipher

Im stuck I'm fairly far along i beat strong man in a few hours.  i have things i've been carriing around for the professer dont know how to give them to him and I have no idea where to find skadi loki and bragi, i know scandanavia , IM at armoury of Thor. can someone help me please. i went back to completed stuff no luck. I play on a tablet if it matters

please help  thank you