Dungeons 3

This is done in the "The Battle of Steelsmith" level. For this trophy only fighting minions count, your Snorts aka the worker minions don't count. To increase your creature count you perform research at the cost of resources, each additional creature requiring more gold and evilness. Once you've researched enough to have 15 allowable minions, spawn any 15 to reach the 15/15 cap for this trophy.