What a fantastic piece! Above all, I think what I loved about this game most was how gigantic it felt. From the outside, the building was not striking. Once inside, it was an absolute LABYRINTH. No two rooms felt the same, which is a great asset to you as a game developer because it speaks to how you took the time to specifically develop each room and make them unique. Your monsters were creepy and the level of difficulty was at times burdensome (with looking for items) but at no time did the game feel unfair. If I had any constructive feedback to give, I would only say that, as a player, I did not find myself too interested in the story of the facility. I think that's because there is already story enough: as a player, you know why you are there, you find out that you have been tricked, and you know the conditions of your survival (find the quest item and leave). For me, it was hard to care about the story of the facility and the zombies because in no way did learning that story pertain to the game. Yes it explained why there were such horrendous creatures, but it did nothing to help me as a player nor did it change my objective. I just wanted to find what I was looking for and get out. (BUT, that's just me and maybe others feel differently!) Despite this, you should be incredibly proud of what you've created. You've a real talent and I encourage you to keep creating. Thank you again for the fun experience!