The sting of relegation really did hurt, didn't it? But you're doing really well, let's see if I get some respite, or you widen the gap. War. I expect nothing less!
How many games does each team play during the group stage? I guess its not everyone playing against each other, as that would mean 15 games in the group stage.
I'm going to put my hands up here and say that this is the first time I actually tried to look up the rules. Liquipedia didn't specify, and the first 5 links I tried reading also didn't specify, but I found a post on reddit that finally explained how Wallachia works:
After the first matchups, you play against teams who have the same score as you. So, if you have 2W1L, you also play a team with 2W1L. Until you reach 3 wins. 3 losses means you're out.
Tundra one of the first to get eliminated from DOTA, and they were, when I saw a week-old news item, pre-tourney favourites to win. Pretty random I suppose, when you can't control the matchups and you don't meet everyone heh.
Now that all my opponents know I barely do research for these questions, advantage to you. Shocking, really, that I only just got relegated =p