Very cute character, nice girl and bat model and texturing.
The coloring of everything is pretty good. The red and grayscale work together well. Not sure about the blue though.
Blue is not bad, but I think it's not equal to other colors, like there's not enough blue things to justify it with only the orb and small echo location waves.
Maybe guys who are behind buildings should be blue and not red to signify they're visible through echolocation?
Initially steering feels bad, but after figuring it out it's pretty rewarding.
The instinct is to keep pressing spacebar to brute force the trajectory of flight, but it's more like a space rocket (with some steering with gliding), where you pick a direction and then wait for the right moment to flap but only apply as little force as necessary.
There's a clamp on looking down, but not on looking up - you can do a glitchy flip.
Are waves different or it repeating?