Feedback:
1: There should be controls for aiming that don't require moving my right hand away from the arrow keys over to the mouse.
2: Levels should be numbered so as to make it easy to google hints for or just to discuss.
3: Clearer delineation between green power cable in OFF and ON mode. As it is, I can only be sure it's ON if I have an OFF cable to compare the brightness to or I follow the cable to the button or switch. Maybe an animation while ON?
4: 90 degree magnet gates shouldn't fill with color inward after turning, they should fill with color from top to bottom, as if gravity is pulling the magnetism into the lower one, to clearly communicate that it's the lower one that's active. Maybe even drain the color from the other pole in tandem.
5: Too much aliasing. Graphics seem not to be aligned to game resolution. 2 pixel wide lines sometimes appear 1 pixel wide, sometimes the inverse case, depending on where in the resolution grid they fall. Playing on 3440x1440 in windowed as that's how the game started, fullscreen seems bilinearly upscaled from windowed resolution so doesn't change the issue.
6: Pause menu options seem inconsistent. Sometimes require a double press. Playing at 100 hz