The two attacks which can override the Shield are Rival Hits and Hit List attacks.
Yahya Mungo Bey
2 months ago
I have a Different outlook on that question Rory from my experience playing the game another player can attack you as many times as they like even if you have a peace shield up because that attack may come from a retaliation rivalry hit I am Aka Killlah in the game and I run the Gang SkullGang ☠
3 months ago
A player can attack another in his range any-times when his Shield is not active.