Really cool idea with switching position in the world to do different abilities! I found it a little bit confusing to call it "Backward/Forward" since I thought of "backward" as left and "forward" as right, since it's a sidescroller, but I eventually figured it out!  It could've used some more clarity on when I should switch forward or backward but I did like the freedom of switching whenever.  I eventually fell into a sewer and died to a seemingly endless wave of enemies, not sure if I was supposed to win, switching didn't work I don't think(?), felt a little abrupt.  Really really cool idea though!