The game was very good, but there is one serious glitch:
I was able to pick up the exit key and get out of the building before I should, but then I couldn't finish the game because I didn't have the gun to kill the guy, so I had to start all over again. LOL
Other than that, it's a pretty solid short horror game.
I'm gonna give this 4/5.
Damn, I'm honestly not sure. The thing is that I played the game yesterday, but I had already downloaded the game some days ago, so I really don't know.
But the bug was present in both of my playthroughs, and I could have taken the key at any moment. The only difference is that I didn't take the key in my second attempt, because I already knew that it would lead me to a dead end.