move_and_collide() doesn't detect collisions from behind

[rustic prism]

The player needs to detect that and tell the enemy about it

Although using an Area2D should work fine as long as you're actually using that signal, and the Area2d is bigger than the kinematic's size

A kinematic body only detects collisions from its own movement, it can't detect things moving into it

Honestly I'm not sure what you're trying to show in that screenshot, or which part isn't working

Have you changed the layers/masks?