Haha, at first I completely missed the point, I thought I was pushing the robots out of the panel with my bullets and didn't understand that the more you get hit the more you slide. Then now that it made sense I think it's a very cool idea and a very adequate game loop for a game jam which also perfectly fits the theme, the game is pretty fun.
One way or another, I don't know what part I would change, but I think I wish I would get overwhelmed quicker, in fact after a while it seems like the main way you might die is that if one or two enemies in a row pop exactly where you are which is not even a specially fun way to die.
Cool game!