Very impressive! Initially, the graphics and wall of text can be a bit intimiditing/overwhelming. Maybe just remove the city in the background when you're at the menu?
Once I started the game, everything was quite clear and well balanced: challenging, but doable.
(It did take a few tries to realize the red things gave you coins, but that's probably because my head associates "coins = yellow thingies" and there was a disconnect in my brain :p)
Just to comment on the other comments: I only had slight performance issues on my machine, and I have an old HP laptop, running Windows 10 and Firefox. Maybe that feedback helps with performance optimization?
I think this could become a really immersive game with some polishing! (By which I mean: clearer menus/explanation, varity in visuals and variety in game mechanics.)