If Rue won, it could lead to a very different outcome. Maybe it would inspire more rebellion or bring about a shift in the Capitol's control. It's an interesting 'what if' scenario that opens up a lot of possibilities for the story to unfold differently.
You need to complete certain specific tasks and make specific choices throughout the game. It's not straightforward but can be achieved with patience and exploration.
In most comic versions, Echo isn't deaf. However, there might be alternate or special story arcs where this could potentially be a trait, but it's not a common characteristic.
Sure, Echo is portrayed as deaf in the comics. This trait plays a role in shaping her personality and the challenges she faces throughout the comic series.