Hi,
Glad you liked it. I am really into this retro shooter genre. Still playing arcade shooters from 90s on mame (or in browser even lol) Its only a demo maybe I will work on it again soon for a bigger map or even a round planet (like: Super Stardust HD)
It was very easy to code because it was made with ue5 blueprints. If your good at it you can make this in a few hours. I took a few days because it was my first game Jam (got a free course from gamedev tv from them after, like every submission). Asset generation is very easy now too because AI can make it.