Posted: 14 April 2018 at 2:50am | IP Logged
Not sure about flying, at the end of Ragnarok he got down to the bridge and it seemed like he flew down though it just could have been a huge jump with the help of lightening.
And regarding fights, of course he can fight without a hammer. He had just forgotten it, or never considered it because he'd been fighting with Mjonir ever since. But during his fight with Hela he had this dream/vision with Odin and he realizes finally he's the God of thunder and not hammers
He can kill/fight his enemies with lightning. It was another thing she was too strong for him. Only the destruction and downfall of Asgard could really kill her. Even though am not sure if she's really dead.
Although spoilers say that he'll get another Hammer in infinity war.