[Suggestions] Gameplay frustration in Amnesia

[snakebyte]

I approve your critics, but in my original post i referred to gameplay mechanics.

How much time can you explore the same area (to find a puzzle item) before get frustrated?

In my CS the player is stuck inside a room full of details (he will be inside this room may times in a game). The first time there are no puzzle item to find, but when 5 minutes are passed an event will occurs and the player can go forward in the game.

In 5 minutes the player can explore this environment (Rooms full of details) in which he will pass the most time but he can't do anything to force the gameplay and he doesn't know this.

Do you think can this approach be wrong?