Life

for example, a player is level 25.. then he need to kill at least 5 mobs of floor 30 strength mobs like you'd find on a dungeon at floor 30 : 

floor strength mobs:   (Floor Level x 4 Health, Floor Level x 3 Damage), mitigation that is at least 1/4 of the mobs HP 

loot mobs:   (Floor Level x 4 Health, Floor Level x 3 Damage), mitigation that is at least 1/4 of the mobs HP and at least half the health of the highest player in the thread.

so a group with a player with max. level = 25 would need to fight 5 mobs with the following stats:

Health: 120 [(25+5)x4]
Damage: 90 [(25+5)x3]
Mitigation: 30 [120/4]

if the mob's health is least half the health of the level 25 player, then he's also a loot mob.

Hope that cleared it out. If I'm wrong then a GM will correct me.

Don't worry, Zaz cleared this up for me last night :D Thanks!