I don't get very lost, as in "where am I?" but I will occasionally find myself wandering all over a level looking for the frakking trigger point that will let me advance. And yes, I do think that's a design flaw. Getting killed over and over in the same point, OK, difficulty curve, sucks to be me. But if I have killed every damn thing and unlocked every damn door collected every single mcguffin, and talked to every damn NPC I could find and STILL can't find the trigger point, then the designer deserves a Nerf dart to the head, at the very least.