Game looks really nice, especially the environments. First level flows nice and has a good pace, was only confused a bit at the end since I picked up the last key but apparently the exit door was already open for me.
Pistol has no cooldown, and is fairly weak which makes it a bit too clicky when you have no ammo, especially with how easy it is to stun and stunlock enemies. Shotgun has no cooldown either, and the pump animation is pretty bad (didn't even notice it was there for a long time). Personally I kinda like the concept of rapid semi-auto shotgun for this game, it's just the pump-action model doesn't communicate that it would work like that. Flamethrower is funky with the fact that you can outrun the projectiles, and desperately needs specific death animation to feel good using it. Picking up items also feel like they don't have much feedback at the moment, I only noticed they have that quiet pickupsound by the second level.
Second level is a lot more open and can be a bit confusing at times. The color-coding of the doors is not great sometimes (for example, the green key is used in the green building, but only in one doors - the other one needs the red key?) Having it hinted with colored lighting is an insteresting solution (definitely helps from a distance to give a clue on where to go) but having the doors themselves some kind of indicator of which key they need could be great. Also the tram needing both a key and having debree blocking it is a bit overkill in my opinion. The sewer section is also not that great, especially the part where you have to go through the underwater tunnel with barely any vision killed the pace a little for me with how many times I ended up turning around by not seeing where I'm going.
The setpieces are nice, going through the tram section is neat and having the car pull up with the guys coming out the first time was really cool, but I feel like it got a bit overused afterwards.
There are some bugs with the street level: the pool/fountain in the middle has solid water, and there's some z-fighting near it at the right of the stairs. I also fell through a couple of stairs during that level, but at least was managed to get out every time.