I want to like this and at the same time I want to hate this. I have quite a lot to say, so I'll try to structure this feedback in some way.

So, let me start with what I liked. There seems to be a lot of interactivity, and I quite like it. I seem to be able to talk with some NPCs (even though they tell me gibberish - but that may just be a broken font), I can grab junk beer, I can buy some stuff from street vendors, I can get run over by a car, enter some buildings... It's neat. There seems to be some sort of faction mechanic underneath. Grappling hook works, and the map has a lot of neat verticality - which is good. Even a built-in height limit! And quite a number of guns, which work well enough. Bazooka shooting pistols is pretty funny. 

It seems like a lot of effort went into this game, and it shows.

Yet it also shows that it's held together by sticks, play-doh and a prayer, and those construction materials don't seem to like each other very much. It feels like it's constantly trying to break. Completed missions keep getting completed over and over again. Health decides to decrease itself randomly. Damage indicator shows up whenever it feels like it, and it doesn't really like synchronising with health very much. It's extremely rough. It's playable, but it borders on the edge of "technically playable". Some damage deals 13 points to health, some just kill you. Physics also wanna take a bite out of player, including the vent in the bathroom. But that's not the worst problem of this demo.

The worst thing about this demo is the color scheme. I guess you wanted to hide untextured assets, and it looks cool on screenshots, but it's EXTREMELY unpleasant to play. I played for 40 minutes, and I had to take a break and close my eyes for a bit, even eye drops didn't really fix it. It's a huge strain on the eyes, and what's worse - some scenes in the game are so overcluttered with objects that it becomes close to disorienting, even after you kinda get used to playing. Maybe it could be fixed with shaders, maybe it could be fixed with contrast sliders - I dunno, but I'd say this colour scheme is borderline criminal.

It's not a bad demo, and I don't wanna crab or shit on it. There seems to be a lot going on, and I like what you have going on here in terms of mechanics. And I understand that imsims are tough and bugs are gonna be present in the demo, that's to be expected. But the visuals... Sorry, I legit hate them. That is my biggest complaint, and what's ruined this demo for me.

Movement and visuals are nice.

I accidentally killed Ivan while talking to him, because I assumed LMB would advance the text, not shoot.

Some more verbose mission instructions would be helpful. I had a task to "kill a robot pedestrian", and I figured I was supposed to kill a certain one, but apparently I could just pick any robot pedestrian and kill them instead. I also had to talk to some rebels at a restaurant, but I couldn't find them. There's a dark square in the upper left of the screen which looks like it's supposed to be a minimap, but it just said "none".

Atmosphere was pretty cool. I liked the random radio chatter.