This game has a lot of potential, but it definitely still needs some work.
Customizable controls would be nice. I for inventory is very annoying.
Movement is great. The vaulting feels super nice, but crouching and sliding is pretty jank.
I feel like instead of pressing c to crouch and sliding after holding c for a while, it needs to be reworked to instantly crouch when pressing c while not sprinting, and instantly slide by pressing c while sprinting. Release c to stop sliding, releasing c early causes you to stop sliding early. Sliding down slopes gains you speed and allows you to slide longer.
Sprint toggle would be nice.
Sometimes I can't double-jump for a long while. Enabling instant bar-swinging delays your double jump which feels very jank.
The sword you get from the spider is too OP.
Ammo loot should be buffed to contain 2 magazines instead of 1 (just my opinion)
I never found the door that you have to put the code in. I basically finished the game, because I killed the spider and speed-buffed both of my weapons and delivered the railgun to the girl, but never found the code door. I likely skipped it. I feel like there should be some sort of waypoint pointing to the code door after completing the railgun quest.
Enemy AI could be improved to allow for more stealth, maybe add tables to hide under or lockers to hide in. How it would work would be pretty basic but it would allow for a completely new playstyle (parkour+stealth always works well). Every frame an enemy sees you, it sets it's target pathfind position to your position and activates aggro, when the enemy reaches it's target position it disables aggro and goes back to roaming. When an enemy is near you it just attacks like normal. When an enemy sees you hide (in a locker or under a table if that gets added), it pulls you out of your hiding spot, if you're not in that hiding spot (crouched away from the table or something), it just goes back to roaming again.
Overall, I give this game's potential a 10/10, it has great potential but it's still a bit unpolished.