After 1 minute of fighting, several Lumbridge Guardsmen, headed by Jimmy the Chisel and Aggie (remember One Little Favour?) Will seem to OSRS Items detain the HAM members, which means you will only need to worry about Sigmund and Johanus after that. Zanik will take Sigmund, while Johanus comes in you. You can either use an Ancient Mace (it will not remove his salvation though), full Veracs, or you might just switch fashions every now and then.

When they're dead, the HAM members will operate. Oh well. You point out that the box in Yubiusk slammed closed after you freed her. Zanik says that because it's some power of Dalgroth, it's near indestructable. Zanik mentions that while trapped, she learned stuff about Bandos, including that Dalgroth is his supernatural power, which makes some of his own ogre followers around immortal.

You propose destroying the box the exact same way you conquered the Ogre Shamans in Watchtower: using a potion. Head to Yanille and make a potion just like the one from Watchtower, in other words, with guam leaf, jangerberries and bones. Though I do not know what sequence you make it because it DOES matter. 

When you've created the potion, take it to the Watchtower Wizard and ask him to enchant it. Head to Dorgeshkan and bank to get a huge battle. Inform Oldak you are prepared, and he'll lead you to his portal machine. The box will burst.

Wait, I hear something. It sounds like a thumping, just in a pattern, like marching.... To Buy RS 3 Gold the portal! This planet may have life after all, and it sounds like really big life at that!