King's Bounty: The Legend

By the way, I think that the game is virtually unplayable without "Wrath" for other characters.

I completed it without any problems on normal difficulty as a mage; feel free to ask your questions.

I'm really worried about the experience issues. My hero is still level NINE!!

Fight more, gain more experience. The Marshlands are a treasure trove of experience (many quests) and useful items. You just won't be able to capture the Undead Castle, but everything else is good there.