Too easy, isn't it? I didn't use 90% of the level... Spoiler: Shortcut? Climb the stairs beside the win with B and wait to the zap to kill him, so he touches the win.
Second Chemi's comment. Also this ... Spoiler Even easier is trapping the zapper underneath B on the first slider, then releasing him by pushing it back into place. B gets zapped and falls on the win.
