If you’re looking for a film that exemplifies the idea that scripts should keep putting the protagonist into even more difficult situations and that each respite is merely brief, then go see Gravity.
It is also a textbook example almost of the Save the Cat process and of McKee’s storytelling in three parts, so if you want a film to analyse that has a minimum of characters to focus on then this is it. It is also a damn good story and the first film I’ve seen that’s worth seeing in 3D since Avatar, and the first film I wish I’d seen at the Imax.