Hey i actually had never read this comment, damn!
Point 3 : lol it was implemented by accident, but we liked it so we kept it
Point 5 : Sadly i had truly messed up the controls and did not have any time, I was aware of the weird acceleration and was in bit of a hurry to finish it.
Point 7 : Yeah i was trying to fix that bug too but didnt know what to do.
Point 8 : It was meant as kind of a logic puzzle, if you have heard of OR and AND gates.
Point 9 : Well, I personally wanted to experiment what it feels like to lose all your stamina and power after going through so much challenges, only to find out you have no more energy to fight the end boss, but I played the game a few times and I was able to defeat the final boss, just needed to be super quick.