Heya OhmZ, thanks so much for the feedback!
Your criticism is right on point, I over extended myself a bit and couldn't get it nearly as solid or as bug free as I wanted. Unfortunately my HDD crashed the very next day after submission so there will not be opportunity for me to polish this up as I would've liked :'( In fact I would've liked to do a lot more than just a bit of polish, damn!
Regarding the ammo problem you had - yes there is no ammo on the level, ammo is regained by jumping/flying above enemies and then holding shift to slam down onto them - when you kill an enemy in this manner you regain ammo. Not sure if you were aware of this already or if you struggled regardless of understanding this mechanic. Just in case . There is red warning text above your ammo counter that explains this when your ammo runs out. Playing the game a bit myself though, I realize the difficulty and lack of space for the player to breathe makes it very difficult to read a bit of text in the corner of the screen. Even in spite of knowing this though I do agree there is not enough ammo, especially with how hard it is to shoot down the damn glowing balls...
When I play tested, it was entirely through the editor game window. In the game window you can see your mouse cursor, in the game itself you cannot. This makes a massive difference to the difficulty level, because shooting the red missiles down with a mouse cursor is quite easy, doing so without it is damn hard.
Lots of lessons learnt this jam, but thanks I really appreciate your feedback!