The animations ended up a little choppier than I'd have liked, but getting them synced to the beat was the main thing I tried to do - the crosshairs for each gun for example also pulse in time, and I ended up having to cut it for time, but I wanted to have environmental props and assets that reacted and animated in time to the beat too to give real visual cues for that. Pick-ups still do this though, and so do doors.
It's hard to make out and I needed to find a better way of doing it, but firing too early or late does actually make a dry-fire sound! I think in the future I might polish that with more obvious cues - or having the gun just not fire on the next beat tick as a result if firing too early.
That first thing is partly why I gave the pistol infinite ammo - you can use it as a metronome if you need.
I'm glad you had fun though, and thank you for playing!