The Undead Overlord and his slime

Soul has been in the game for years yet never able to join the guild with his friends because of the deal he made with the devs. In the last week he is allowed to join and make his mark on the Great Tomb before it all shuts down. Now in a new world and with a body that wants nothing more than to hunt how will our Overlord deal with a slime powerful enough to level the world.