Thanks for playing! I didn't have time to implement a proper continue system as my current restart system came together a few hours before submission. Same with the sound effects, I made them all in PICO-8 which is why they sound like that. It was the fastest way I could make the handful of sound effects I needed. But I wasn't super happy about how they sounded either. Time to learn some better audio processing tools haha.
My entire game is coded in lua so there is a file which has a list of enemies to spawn, also the text to display. And each enemy has a starting spawn location, a location to stop at on screen, and a location to fly to off screen, and the time until the next enemy spawn. With that I just tweaked the numbers until it became fun to play