A solid prototype but I couldn't get the game to load properly on my display, it's like it started at the middle of the screen, to the right. It was pretty hard to see what was going on. Nice job for a first try, for sure! Keep it up :)

The design of the ship is nice and the enemies are kind of cute ^^

I think the enemies are coming a little bit too fast. It's ok when you can see them far from the right, but when they are on top of you, you can barely see them before approaching you.

The core concept is here and I can see the amount of work you did there. You gave it all, and for a first, it is really nice !

I can see that you ran out of time for some things, so I would like to give some advices of what I feel about your game if you want to continue it (or for your next game ;) ). This is not negative criticism, but just ways I thought would improve the game :)

It is a nice idea to have implemented a jetpack animation for your character, but it is a bit small and hard to see in the background. Maybe you took a too big limitation for pixel art size. Or try to do jetpack alone and attach it to the player.

I find the fact that you are shooting  only in the directions of your character feels "heavy". Maybe adding mouse control to shoot where you pointe is would have been better. (In that case it is really only my opinion though).

And last, the lack of sound design really gives an impression of emptiness. I do believe that adding just the sound of the gun would have be enough. Or the sound of an alarm running all the time too (which would have been nice with you red alarm going in the game). Don't put too much sound too, or it will be just death for hears x)

But overall, really nice try in the Jam. Congratulaitons for your contribution !

Cute pixel art and a nice map, really like the pixel art space ship windows. Would love to here some audio and see the bullet. Nice theme implementation and fun to play. The speed run timer is a great addition and nice that the timer is centered in the screen. Makes a quick glance easier. Great job man aspeciality for your first jam :0