Some random video game questions?

What do you do with the amateur’s bag in rumble fighters, is it like an achievement medal kind of thing? What’s a good free online multiplayer game that’s a third-person shooter, I have already played battlefield heroes(doesn’t work on my pc anymore), Gunz the duel(too many laggers and hackers), and counter strike 2D(I sometimes play it if I’m bored). It can be downloaded but it should be no more than a gigabyte