Kill them, kill them fast. Pick a spot (met zone is a good place, get mets and win the race at the same time)

(the amount of kills needed subject to change)

T3 - People without Scatter/EliteScatter/Pervade/FireCircle. First in Tier 3 to kill 6000 Monsters Wins the Tier 3 prize! Prize: +4-8 Stone.
T2 - People with Scatter/EliteScatter/Pervade/FireCircle without Cyclone. First in Tier 2 to kill 9000 Monsters Wins the Tier 2 prize! Prize: +4-8 Stone.
T1 - People with Scatter/EliteScatter/Pervade/FireCircle and Cyclone. First in Tier 1 to kill 11000 Monsters Wins the Tier 1 prize! Prize: +4-8 Stone.