Hi TheLO! Thank you for showing interest in the game. We made it back in 2012 and I never got around to making a proper page for it... Until now XD
I've updated the page to try and answer your question. The idea for the game was to try and make a platformer where you couldn't move. Instead, you had to use the recoil of firing your gun. We had a lot of fun making it. But be warned that it's quite difficult to beat.