EX Survival of the Fittest

is a level 86 in . 
==Overview== 
 is a in which the must stay alive for ten minutes against hordes of monsters. Strong such as , , , , , , , and spawn every 30 seconds, while an , an , a , and an spawn only once during the . The ends after ten minutes pass, and can be cleared using any . When completed for the first time, the receives a reward of ten , ten , 700 , and a random .
==Nomenclature==