Tactics Ogre: The Knight of Lodis

To acquire Necromancy, complete the Batraal Chronicles quest level. In order to use this spell, you must have Elrik. He is the only person able to use this spell, unless you have a Lich readily available. This powerful spell brings back any unit and turns it into a ghost.

Did you know that there are two rule settings in Quest Mode? It's up to you to pick either "Defeat Leader" (which is the default) or "Defeat All." The latter will yield more items, whereas "Defeat Leader" will get you higher quality (but fewer items) if you're fast enough. So pick "Defeat Leader" if you're confident that you'll be able to take down the leader in seven turns or less. If you're out to get a large number of items and take a longer time to finish battles, then "Defeat All" is the choice for you.

Equip a character with the four Enchanted Hunting Wares. The movement range increases significantly if all four are equipped.

In the Tundra Geology quest, you can get the four Divine Armaments. They are: Oracion (sword, Banish effect), Freude Helm, Saint's Shield, and Southern Cross (armor). When a character is equipped with all four, he or she is immune to Bane weapons, spells, and support spells. The only downside is that you cannot increase their MP with Fluid magic or Energy Transfer.