This is awesome! This has massive early 2000's shooter vibes. Twas a golden age for FPS games and there were plenty of lesser known kinda janky but charming games like Breed, Creed, Pariah etc. This fits right in with it's jank* but also tonally and somehow even the music is reminiscent of the time. Also the intense post processing just sells it lmao. This is a very complete experience too and the music is great especially like the dramatic drums in the menu screen. Did you scale the mouse look movement with deltaTime? Cos I think that would help a lot especially when it gets laggy from all the destroyed stuff!
*not supposed to be a burn, if you remove the jank it would still be fun