Here is the full list of all 12 Quarrel achievements worth 200 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox 360.
You dominated the Known Quarrel World and now wear the Quarrel Crown!
You completed all Challenges to Gold standard
You captured a phenomenal 100 prisoners.
You captured a prisoner from each player in a four-player match.
You skilfully defeated Rex, Helena and Kali in a single timed match.
You made a staggering 100 Quarrel anagrams.
You efficiently claimed Calamari Cove from Dwayne, Caprice and Malik in a single turn.
You finished a match with a perfect Word IQ of 200.
You defeated all-comers in Showdown.
You made a whale of a word worth at least 20 points.
You capably captured Starfish Bay in Domination without losing a single quarrel.
You made your first ever Quarrel anagram.