The game was super fun. The gameplay was super cool, the UI was good, the weapons sounds were so good that I forgot at one point that this game was about BackRooms (it was pretty scary, really, and the monster was really horror, but unfortunately I couldn't kill him after how much damage I gave him, I assumed that it was impossible to beat him and closed the game). In general, the game was super good, but I had some problems:
1) I didn't know you could change weapons with the mouse wheel (however, I liked how you showed the other controls like "Enter" to open the doors).
2) At the beginning of the story, when that short video appears (a brilliant idea, however, to show the players where to go), one of the voices is that of a soldier (which sounds good) and another of the player (although the player's voice is louder than that of the soldier and it's a bit disturbing to the ears, maybe the audio part needs to be worked on a bit).
3) During the introductory video, we see through some cameras where the enemies are, but the camera moves very quickly and strangely (I think the movement was done manually by the developer) and it was a bit tiring for the eyes to follow.
But good work, I really enjoied ! :)