Overall a really cool prototype that has well working and smooth fundamentals with a really nice and eerie atmosphere.
Movement felt nice altogether, I didn't get stuck on any random invisible edges or struggle walking over small items on the ground, which was very nice. I did manage to get on top of tables, boxes etc. by stacking items. Maybe something to be wary of since no jumping, could be abused. I was also able to get inside of a small box and a barrel by crouch walking towards them, only did this once so not fully sure how. While in the barrel I could drag it and move around. Again though, didn't find any way to take advantage of it.
I think adding a slider for ADS sensitivity along the regular sens would be good. I also think the keybinds should just be in English, never seen a tab be called "Sarkain" in keyboards :D, also idk what those are translated from but if the word is huge in some other language it might look silly.
Some people might want a healing animation for immersion, personally I think it's better and sharper without, as there's still a small cooldown on drinking them and the action has a sound. Same with picking up items, no animation just makes it a lot cleaner IMO.
I'm not sure if the prototype was made to reflect the intended difficulty of the game, if not then ignore. I had way too many resources, especially ammo. Was pretty much capped the entire game and kept finding more :D. I'd suggest reducing the amount you get or adding other functions for it, maybe some special moves that cost more, could be for utility (burn some roots, illuminate an area, slow a monster etc.). Hollow knight used one resource for special attacks and healing, that's one way too. Possible utility could later on in development be used to add depth via puzzles / bosses.
I wish the last alien/monster had some sound for breaking doors, I kept closing them and checking back just to see it run after me :'D
As I said before I think overall the prototype is very promising, there's so much room to expand, with other maps and story. I played on RTX3060, Ryzen 5 3600 & 16gb ram and the game ran perfectly, constant 144 with vsync on. Streaming it using streamlabs Game Capture and Screen Capture with "vsync" disabled caused major stutters in the capture, this is obviously rn completely irrelevant but worth noting for later(?idk maybe).