Although its nice to maybe unlock additional items or features in a game I think it kinda makes the game boring. At the moment im currently playing through Splinter Cell Double Agent on the pc. If you achieve things like being able to get through the power plant without setting off alerts you get "special items" like explosive cameras??? I dont really want to either constantly restart the level or play so slowly and carefully that I am not enjoying the game.

I played through Half Life's episode 2, unfortunely I didn't know you could turn off the notifications! I also found that they broke the realism of the game as it would sort of pull you out of the Half Life world and back into reality. Restating what you have said, if we must have achievements, make them so they cant just casually be completed.

Tom,