I've just played L4D2 Survival for 2 maps, The Port of The Passing and The Generator of No Mercy. I got a gold medal and silver one. But when I check my L4D2 stats, it didn't show any new stats that I have played. My friends are the same as me.
Is this a problem? L4D2 Leaderboard also doesn't show any new Survival map, The Generator - No Mercy, for example.