Big fan! Love the aesthetic. Love the China. Love the DOOM.
It's extremely, extremely similar to DOOM, actually. Strafing and holding LMB was all I needed to succeed. I would say my biggest critique is the same problem I have with DOOM; I get lost really easy. I saw you use coloured lighting to guide me to where to use keys in the ship level, which is smart! I am notoriously bad at looking for things, but I really couldn't find the green door in the streets level.
The core loop of running around and gunning dudes down is great. Your level design is solid, and I love set pieces like the cars driving in or the dumbwaiter. To my personal tastes? I think it could use a few more enemy types. Games like this live and die on enemy variety for me.
The twin dragons at the end of the ship level seems very placeholder, but the idea excites me. If you can execute on that concept in a way that's mechanically engaging and fun, I think it would be super hype. Even something simple like giving their segments separate health, and having them change colour when depleted as the dragon flies around the room. I just really love the boomer shooter in China concept, and I wanna see the idea taken to the height it deserves. "These mafia guys are transporting fucking dragons" is too good.
Minor bugs, I was able to jump out of bounds off this balcony right here, see below. Also you can still see the prompt to open doors from the wrong side after you've already opened them up on the right side. I also experienced the performance issues when shooting at walls close to the camera, I was experiencing some performance hiccups and hitching in the tutorial level as well? I think I got a hitch every time it loaded something new, since it had the "hitch when I fire my gun for the first time" issue.