Game has potential, but the difficulty of the game doesn't go anywhere at around 2000+ score, and most of the weapons become rather obsolete given the DPS comparison between them. Like, for as the game stands, I can just ran back-and-forth getting through solely on Glock since it has decent damage and infinite ammo, actually having the Revolver become grossly overshadowed since the ammo is severely limited even in drop that the damage trade-off doesn't seem worth it when I can just spam either Glock or Uzi.
Speaking of Uzi, ammo drops for it become frequent enough to where you won't have to really worry about running out of it and the damage you can pull between full reloads ends up netting you back the ammo you lost anyway. The only weapon that I see otherwise that seems good where it is at is the shorty, honestly. Good damage, good ammo chance, and ammo management doesn't really feel too much of a detriment to where it feels useless as a weapon.
Again, good game and fun, simple concept; just needs more tweaking on the difficulty scaling and a few weapons need to be adjusted. Good luck on the updates!