i really like the style of this!! huge fan of y2k aesthetics and this scratches the right itch for me :3
optimization could be better though, i found that entering areas without killing enemies in previous areas would lead to game lag. it also appears that since sensitivity is also tied to fps, the lower the fps the lower the sensitivity, which made shooting enemies exponentially harder :(
great concept though! i would love to see what you guys have in store next! ^^