I really liked the concept of a drone that provides your lighting and the character designs are really cool. Some feedback:
The jittery movement makes it seem like your movement calculations are done in the Update() method instead of FixedUpdate(), or you're mixing it across both methods. If you're applying an movement to a rigid body in Unity, try switching it all to the FixedUpdate method to see if that helps. I had the same problem with mine and spent a day trying to figure it out.
The intro enemies take a lot of damage, maybe make them one shots while players adapt to controls.
All around I'm excited to see the next iteration of this and can't wait to try it out. Great job!