Hi! Nice first project, bro. I have some thoughts: The limit collisions are way too annoying, there's some weird bug with bullet count, I didn't understand what really happens when you go inside the garage, some improvements on art will be appreciated in menu and some screens.
Overall I liked the execution! I can't tell you to keep going with your project and I think it's way too small for someone to tell you so, only you can make the call.
Good luck!