New Enemy: Observer
Unless you intend to play the staring game, this enemy is not particularly strong, it has no offensive capabilities whatsoever, but the effect it has on other enemies is not to be ignored.
The Observer can sit on any surface in any location, silently observing and waiting. When it detects the player it will ruthlessly… stare at the player.... and of course alarm other enemies about the players state (a true snitch).
The Observer is not particular discrete, normally it gives off a clear green light and when a target is spotted it will start blinking bright red. So, if you find yourself approaching a silent and seemingly harmless corridor illuminated with a pleasant green light, you should probably think twice before entering.