thanks for the feedback. that people are enjoying this without even winning should be considered a positive!
i agree that submitting the right monster with wrong evidence producing a loss isn't the best. it does allow me to show glimpses of the monster without negating the rest of the mechanics, hopefully a net positive.
right now there is no good way to tell a monster is hiding behind a door, i wanted to leave it a surprise. in the next update i'm adding a heartbeat sound once you start opening a spot where there's a monster. it's up to the player to be cautious when opening doors.