Puzzle Quest: Challenge of the Warlords

Unlock 3 new areas at the end of the game:
Free the Sorcerer that Darkhunter asks you to take to the Red Tower
near the start of the game.

Easy life points:
A following trick requires a level 40 knight with a high fire mastery
(increase it with Rune Items), at least 48 Fire Mana, the Chivalry spell
and the Fire Siphon spell (you can research it from a captured Fire
Elemental). Select those two spells so that you can cast them.
When you start a battle, first check the resistance of your enemy.
It is better, if their resistance is lower (you will get
the best result, if it is 0%).
Cast Chivalry to remove effects and raise your and your enemy's mana
to the maximum. In your next turn cast Fire Siphon to drain your
enemy's red mana and add it to your life points.