Even as a prototype, this is already great fun. It reminds me a lot of Returnal; fast firing, rapid movement and tons of enemy projectiles to dodge. And of course it's also a great throwback to games like PS1 and N64 Duke Nukem games (while controlling quite a bit better, even in this early state!)
Would love to see this developed further; I could absolutely see it evolving into its own unique retro-styled third person action game that goes beyond the Contra inspiration.