Thanks for the feedback
We updated the itch settings so it is now viewable on fullscreen. We agree that basic game accessibility functions (like pausing and audio controls) were HEAVILY overlooked during the development of the project.
For the enemy indicators, we actually wanted to include a function like that, where the enemies will drop in as white lights like being dropped off by a UFO, but due to time constraints we couldn't implement it when rushing for the deadline lol.