Very, very cool game. I liked the movement mechanics a lot, but they were also frustrating. Sometimes I would have very little movement left and right, but all the monsters would spawn on the left and right, so I just watched helplessly as they rampaged and I couldn't get over there fast enough.
But! It was fun and engaging for me to play through the whole thing in one sitting. Might be a touch long for a jam game, but super original and weird. Great job! :D