Nice idea of being a bat having some kind of echo visor.
Looks like a real game, nice music, a title screen with explanations, echos look very good, but multiple echos at once don't work nicely.
Just the same all the time, there seems to be no goal, it's confusing, that you warp around (probably the world moves),
The idea matches the theme very well. The music and general atmosphere could be a bit darker.