Visually, very nice to look at. I like this old-school kind of look; it reminds me of old point-and-click adventures. The music was nice, although it was a bit funny to murder a bunch of people and then hear the calming tune.
The gameplay was fun. Shooting interactables was engaging and the way reloading worked added some challenge. My main gripe with combat might be having too much health; nothing felt threatening really.
I didn't fully understand what the money was about until I walked out of bounds and realized it was a score. Maybe I missed something. but I feel it should be more clearly illustrated; otherwise, the player might expect they can spend the money. Also, with the money being a score, I think there should be some challenge to make it more difficult instead of just persisting to collect more than the other players (e.g. a time limit or you don't regenerate or something).
Even with my criticisms, the game was a pleasant experience. Nice job.