As talking to the gameplay - it's quite (and almost everytime) easy, but I have a few suggestions to it.
Firstly, I think u can add "invisible tutorial" (little poped up game controlls on the bottom of the screen). As for it, u can use different types of echo (quite for shift, normal and loud (has more time to be available).
I have an idea. You can add to Ai feature that allows it find you faster. For example, this Ai can't find you in "shift position" but can find you faster after your jump. Good luck in Game Jam.