How to unlock nulgath's shop in AQW

You need to defeat the first chaos lord Escherion First. After that you also need to complete all the primary storyline quests. Finish the games introductory quests and finish Galanoth's quest chain to unlock Nulgath's shop. (Highlight to see). Sneak past J6's defense turrets to access his shop. In order to unlock all of his items, you'll need to conquer the first chapter of the Virtual Reality room, as well as the first two missions offered by H.A.L. After that go to citadel and finish his quests and go into the bone room in the caves of citadel. After that enter the portal. Make your way into the tunnel beware its very confusing. You also need to have defeat vath the second chaos lord. When you get to nulgath, you can either try to defeat him, damage is 70000000000-90000000000 damage. or you can do his quests and access his shop.