Good

very good

Is tricky, but you only need to crouch and you must enter while crouching to the room.

pretty good level until i get to the room with the drums, I can't get into the room with the red key, that stupid jump from the railing to the air duct is impossible, i spent 30 minutes trying to nail it and it ruins the level for me, at least a jetpack should be hidden in the level if you're going to include some ridiculous jump like that.