Dungeons 3

This is done in the "Two Sides Of A Medal" level. In this level you'll find 2 red Obelisks which require Thalya to corrupt in order to turn it into Evil use. Once 1 is captured you can start using this powerful Obelisk to help kill Heroes. One blast will kill most Heroes save for the most sturdy and will greatly aid in your quest to destroy all 10 Hero areas. You'll be able to kill more than 30 in this level, and the trophy will pop once you get 30.