I know you have to save all the survivors and then do the 2 mini side missions. But lets say you do all of that and you get on the leaderboards, does it matter how fast you beat the game? EX: you get the highest score possible, but you beat the game the fastest and you are at the top of the leaderboards. Please post how you think the leadborads is setup.

Also there was an update what was that update?