Fun little arcade game!
Not really sure why movement had to be tied to the WASD keys, though. I personally would have enjoyed moving the circle as my cursor. Then I'd only have to use the mouse!
It seems when the character exceeds a threshold on either of the left and right sides of the region, the camera follows as if it's towed by a very short string and it has a hard time keeping up with the character. Almost like it's accelerating, but then stopping in very short spurts. Theoretically, that's what's causing the jitter effect.
I think centering it to the character is a good start and might do enough. But there are ways to smooth out that transition to make it less jarring, sadly I don't have solution to just throw at you, so you you might have to lurk some guides for that.
Best of luck!
The boxy shapes along with the more boxy blood shed on the screen, the explosions using onomatopoeia, the shader on the ground made everything look like it was gliding on top of the surface. Set pieces also had some kind of panoramic effect happening with them.
It's a bit of a sensory overload. Hard to describe what specifically is the issue. It could just be how everything works together.
Overall, as a game, this is a wonderful experience. You can really see the heart and passion in its DNA. But, with peace and love, I'm having a hard time seeing how this game relates to the theme. The scale only changed during cutscenes. So it really just felt like a change of scenery and had zero bearing on the decisions I was making.