Thanks for the feedback! I really appreciate the try and feedback even though it's not your preferred genre :)
I have gotten all enemies around the player awareness a few times and it's a problem at the moment. I was kind of aiming for a sound based approach (I was missing a bunch of sounds lol), but even I think it might not be enough. I am definitely considering adding a small radar / minimap somewhere! Thanks for the idea!
I totally agree with you about the upgrade menu! It annoys me too, and I wanted a way to go about that. I will play with your suggestions for solutions and I am leaning on having the player start the powerup screen themselves. Also I am hoping with some animations it should make it less sudden!
Once again I appreciate your advice, and best of luck to your game too! :D