Yeah the phantom damage isn't supposed to be there. So the flying enemies have a DOT effect with this pulsating radar, you'll see it occasionally, but sometimes either the flipbook doesn't play, or the effect lasts past death. Something I had wanted to get fixed but enemy AI didn't get in until the day prior to the Jam ending due to family stuff. Still happy with how it turned out, and I appreciate your comments on it a lot. :)
I might come back to this project and do a small game, and I agree the pistons were a bit OP and the timing should have been slowed down a bit.