Trendy Entertainment has released the third developer diary for its upcoming tower defense action-RPG Dungeon Defenders. The new video (which can be viewed above) focuses on the various approaches you can take during the combat phase of each round. If you’re looking for more, check out the second dev diary which focuses on the art of building defenses. You’ll be able to snatch up Dungeon Defenders for yourself on October 19th for 1200 Microsoft Points. Stay tuned to XBLAFans for more coverage!