Press W to avoid the barriers heading towards you. Press SPACE to jump. Press them quickly (W+Space (in order)) to perform a Flip Jump. Press SPACE and (when you are touching the ground) W to perform a Jump Flip. Don't press the play button twice, it ruins the effect.
Thank you to @Hepig for the idea of the in-game arrows. All code by me. Except for the Logo intro, thank you to @Yazlo for that. Music is Theory of Everything 2 by DJ Nate Comment and tell me what I should add. Have fun! 28 views in 6 hours?! I'm not sure if that's good or not but it's great to me. I released this on 4th March 11:30-ish. I stayed up late working on it. But Thank You to everyone who has viewed this. I'm pretty sure this is the first time this has happened to me. Please see my other projects UPDATES 22nd May 2016: Added Symbol Intro