Oblivion was definitely well made but the story seemed to just sputter out somewhere around 60 minutes in.
I was completely engaged and interested as we learned about this repair crew who had the left overs of earth to themselves. They could have ran with that single idea for 2 hours and I'm pretty sure I wouldn't have complained.
All is not lost though, visually, Oblivion was a blast and M83 did a great job with the soundtrack. If you like science fiction movies you should probably add this to your watch list but don't expect too much. Overall, you'll probably be disappointed.