this will be a bit unorthodox, and i'm not sure how it will work. but it sounds interesting.
if you get aggravated easily, you may reconsider joining

so, i will do a random list, where there will be 4 teams of 4. this will be a complete mixup.
basically, there will be two quad games, the 8 winners will advance to round 2.
this will be 2 doubles games, you will be paired with a random player from the opposite quad team. and 4 winners will advance to round 3.
this will be a standard game with the 4 of you, once friends, now bitter enemies. only 1 will be the winner.
this will be played on the best map that i think fits,
map = supermax; prison riot
settings will be,
default,
+foggy
+flat rate
+30 round limit
winner takes the trophy