Mirror's Edge/Runner Bags

There are three yellow runner bags hidden on every level, including the prologue, for a total of 30 bags throughout the game. While going through a level, red runner symbols appear indicating the presence of a runner bag. Collecting runner bags doesn't give you anything in-game, but does count toward three of the achievement/trophies: Bag lady: Find all three bags in a single chapter. Ran out of fingers: Find eleven of the hidden bags. Packrat: Find all 30 hidden bags.