Having trouble looking for a party for Valhalla?

Why not try using your Slaves to make up your party?

Just get 2 slaves that are close to your level and then go straight to Valhalla. Once inside the lobby where you form a party go to the character invitation interface and click on the Slaves tab. There you will see a list of all your Slaves. Pick the strongest ones and go on on your way to Valhalla. :D