If you find yourself trapped in a corner with one character just switch to another in your party and let the AI get your character out of trouble.
Money Glitch
Use the following trick to earn easy money. To perform it just hire a mercenary of your level, take his equipment off and sell it. Keep repeating until you have the desired amount of money.
Strategy
Don't let enemies surround you as it will become difficult to defend their attacks, a good strategy is to stand to one side and attack in one direction.