Vi 2XKO combo: 645 damage, expert+. After doing charged L, begin charging S1 vault breaker while doing WW neutral assist, once WW assist hits, tag into hi…
M > H > 6S1 > L > M > 6S1 > M > 6S1 > L > T > [S1] > T > 2S2 > 66 > 6S2 > S2 > S2 > S2 > M + S2
After doing charged L, begin charging S1 vault breaker while doing WW neutral assist, once WW assist hits, tag into him and instantly do 2S2 leading to vaultbreaker comboing after being full charged. Besides that, the combo is pretty flexible after the vaultbreaker lands as you can go for limit strike, keep the corner while still building some blood gauge with another 2S2 in the corner into S1 super, or doing a tag launcher back into Vi.