#12 yipeee. I can't even get to floor 4 lol Press the Z key to hide the timer and press the X key to show the timer, because this section is on the timer. Beating the 5 first floors is like Remorseless or Insane difficulty, somwhere in the middle.
For the F12 final jump you are meant to bounce off the roof while on the truss. Hold up and left on the truss and aim for F13.