Clickbot

Punch distance is too short forcing you to wait for enemies to come close while not moving to attack or risk being hit while you're moving and mistime the punch by a millisecond.
Controls need to be changed, you can't use keys like Shift and Control for repetitive game controls or you'll be toggling Sticky keys on and off all the time.
Jump height/duration set poorly so that you can't jump over an enemy moving the same direction as you. Also cannot reach some platforms if you don't get all the batteries in the exact right order because jump heights won't let you return.
Level should not reset batteries on getting killed, that makes it a perfect run or death choice, far too aggravating for general play.

This game needs serious work, not ready for publishing yet in my opinion.

touching enemy after killing before it fall will kill you. You should fix it