Just left the dungeon temporarily to rest up. Then it's back to the Pyramid to finish it off. Once you drop down the secret passage,you're almost done. Just watch for more enemies on the way. Make sure you grab the Hawk Eye on the way too,it's important. Once you exit,Poo will have to leave the party for a bit to learn a new ability,so it'll be down to Ness Paula and Jeff. AN NPC nearby will give you the Tower Key if you talk to him. Then go northwest to find and enter Dungeon Man,using that key. Dungeon Man himself is a dungeon,but it's not too difficult. You'll face some enemies that appeared in the Fourside Department Store,like the Scalding Coffee Cup. Lesser Mooks appear higher up though,beware of them and their PSI Freeze. On the 3rd Floor,you'll find Brick Road,and can exit. Dungeon Man will follow you around outside! At least until you hit a sea of trees to the south. You'll quickly end up having to reenter Dungeon Man,as you'll need a Submarine to access the Deep Darkness area. At least getting to it is essentially the same path. Please note that the Yellow Submarine is purely coincidental. Totally.