There's an interesting foundation here for sure, the gameplay loop seems comprehensible despite the controls and the bullets that come at you occasionally vanish. I appreciate the thought put into this game and the music is cool! Keep it up dude! :)
I don't know if it was just a stamina thing but it felt like the controls stopped letting me move upwards, or was it designed that you lose momentum when you get hit by projectiles? It stopped letting me move upwards :/
it was designed like you fall down if you're going up your momentum is going down, should I change that? If I do the momentum down will be disable too.
And yes, the projectiles do remove 1/2 from your energy