I liked it, has a nice Atmosphere to it, creepy, but not to much thanks to the simply Artstyle. Would probably be a lot scarier (maybe too scary) with some higher details. The Inventory is sweet, combined with the blocky level geometry and rather oldschool feeling movement, it comes together rather well I think.
I think the Play and Options options in the Main menu should be reversed, play at the top and options as third. I didn't want to use up my flashlight battery, so I kept spamtoggling it to avoid any battery usage. Its fine keeping it that way I guess, but since you're a Cyborg, wouldn't slowly fading nightgoogles maybe make more sense?
Elevator Area should have different textures inside to make it more clearly an elevator, currently just looks like a generic part of the Room. A bit more chaos in the random doodads would make sense if this is supposed to be a more horror-y game. Theres corpses and maniac cyborgs around, but all the Spare PCs and Chairs are stacked evenly next to each other?
Finding the Hammer took a bit of time, and didn't make a lot of sense for it to be there, but I wouldn't say its too hard to find, incentivises looking around and makes it clear what you're going to be doing for the rest of the Game.
Only thing I really had a problem with was climbing out of the ventilation shaft into Security, thanks to the crouching entrance height. But I probably just tried it wrong by trying to crouch once hanging, instead of looking upwards when moving, so might not be hard at all and I'm just stupid.
I did however clip out of the Ventilation shaft once while trying to climb it, so theres your Bug.
Fun Game.