Just beat it! I wonder if I might be the very first lol
I think I got a bad ending, though; I won't spoil it but it ended with the word "headcrash."
To those stuck, a few general tips;
1) Starting fights you're not involved in is a great way to get early gear. A simple way to do this is to lure enemies towards cops or armed NPCs; the gunshot might start a fight, or the enemy might kill the NPC. Just make sure to stand clear of any grenades.
2) The best way to get money is robbing cash registers, for $50 a pop. If nobody with a gun sees you, it's perfectly safe, too--and aggro cops/afraid shopkeepers reset when you leave and come back.
3) Speed is important! Speed lets you avoid damage, get out of fights, and honestly just improves your quality of life. Also, coffee is cheap, gives +2 speed with no drawbacks, and stacks infinitely.
4) Consumables can help a lot in the early game, though I didn't bother much by the late game. Not that they're less good, just sort of a hassle. Experiment!
5) Your initial goal is to get the four Ace tarot cards--I believe these spawn in the world initially, but they'll quickly get picked up by your rivals. Once you're geared up, hunt them down and take them for yourself. From there, explore and the next steps will become clear.
6) The shotgun is not actually better than the pistols. I would argue it's quite a bit worse actually.