Just don't use Attack Magic and summoning and stick to Attacking. Keep some cures handy, along with Oogie Boogie (enemy card) and Vexen (enemy card). Go easy on the sleights too, as it's kinda hard to beat him when all you have left is a couple Kingdom Keys. Just keep that in mind.

Like SeedRankLou Mentioned, keep some elixirs, megalixirs, potions, and ethers (and their mega counterparts) handy.