these guys surviving ridiculous circumstances - (circumstances which should have surely killed them 15 minutes into the film), all the while fighting off poorly rendered CG wolves, jumping off cliffs and surviving, making working tightropes out of shirts to cross chasms, and they cap it off with Liam Neeson taping shooters to his fists.
After all that they tack on a non-ending in an effort to induce a poignant cliffhanger, so they can try and get the audience to empathize with a character that's barely been developed.