This game is glorified DLC. It's a shitton of missions - almost 100 of them - with virtually no context provided to them due to the fact that you no longer receive mail in this game, which removes any semblance of a sense of progression. The missions themselves are also mostly snoozefests, as you get one interesting or challenging mission per five awful and dreary ones. There isn't enough cool missions to justify playing this game, even for Armored Core fans. Even 2-on-1 or 3-on-1 AC fights, Nine-Ball and Stinger can't make this game good. You're better off just skipping straight to Armored Core 3.