So I tested it and wow this pure nightmare... It was really well done (even if things escalated maybe a bit too quickly, but with the short time you had it makes sense).
If you ever go for a longer version of this game, I think it would be so interesting to let the player some choices, to make them being involve into this slow nightmare. (With every choice bringing followers or not... and a number to achieve to win the game... impossible number with not going crazy.)
Anyway, it was a really interesting horror game, I felt so uneasy while playing it, very well done !