Gears of War: Judgment

This is the hardest difficulty in the game. You must first complete the game once on any difficulty before you can play this. If you are trying to play Co-Op, the other person also must have beaten the game to be able to play on this difficulty (unlike previous installments). It may be best to tackle this with multiple people in your game. You will need to do the Declassified Missions on insane as well, making this even harder. You also must 3 star each mission on this difficulty. Getting 3 stars is helped a lot by doing the Declassified Missions. Therefore, you should be accepting all Declassified Missions and attempting to get 3 Stars on every section while on Insane. Sometimes games aren't that much more difficult on harder settings, but this is one of the rare that actually mean it.