I like the idea of a huge structure in a purgatory like area, however it feels too big at times namely how it takes too long to sprint down corridors and I find myself just waiting for the stamina to fill, as well as going long distances without ever seeing the enemy, making the maze a bit more condensed or making the player able to traverse the maze more efficiently can help. I do like the grain effect I think its an interesting mechanic. I have some concerns for this being a capstone project, however I think the majority of issues can be fixed relatively easily, audio and level design can do a lot to make a game more presentable