This is so goddamn bad.
It's not that this is a leaked trailer and the post-production may not be complete. The cinematography is so amateur-hour and basic, with a bulk of the trailer just being people walking abnormally slow down a hallway. Also gotta love the cheap metal handrails for a staircase in Attilan. And for the love of god, either tell your mook actors to actually act instead of staring in the middle distance, or don't shoot a closeup shot of a bunch of rifle-armed goons standing in an elevator like they're daydreaming to elevator muzak!
The last few seconds are "action shots". Good god are they awful. I think my favorite has to be the shot of two characters running from automatic weapons fire, but it's clear that the characters aren't so much "running" as "jogging slowly". Instantly wipes out any tension generated from feeling "these characters are in danger".
Compare and contrast to the trailers for Daredevil S1, Jessica Jones, or Luke Cage. They have so much more shot diversity, it's not even funny.
As to the content: Medusa's wig still looks awful, and of course she gets Damseled early.