How do you get the Season 2 Reward - Bronze All?
It was a ranked reward. Riot's description in the client reads: “Earned by achieving Bronze in all tiers in the 2012 ranked season.”
Is the Season 2 Reward - Bronze All still available?
No. The Season 2 Reward - Bronze All was a ranked reward: to get it you had to reach Bronze during Season 2 (2012). Riot does not give out past ranked rewards again, so it cannot be earned anymore.
