Good start of a game. Need sounds or event when you hit an enemy. Didn't know if I hit them or not. My character started off backwards and when I got to the mouse part understood why.
I'd almost suggest showing the buttons before game play.
The audio was fun when you got hit. Watch the edges of your robot design there are white outlines there.
Also your elements in the Background that hurt you did not really stand out as a threat. Robots don't get hurt by a spike. Try something different like a damaged cord that shocks you.
Great start and would love to see updates if you wish to improve this game.