The Hellfire Core

Steps

1. Inspect the Dormant Hellfire Core

   Tassi wants to use a dormant globe of hellfire to assault the demons surrounding Skarn's citadel. Inspect it to be sure it's safe.

2. Kill the Infernal Despoiler

   The Hellfire Core needs a tremendous source of flame to activate. Find and kill a massive Infernal Despoiler and bring Tassi its innards.

3. Give Tassi the Burning Innards

   Bring Tassi the Infernal Despoiler's innards.

4. Defend Tassi and Kill the Servitors

   Defend Tassi while she reactivates the Hellfire Core, and kill the Ashen Servitors that arrive to interrupt her.

5. Protect Tassi and Kill the Servitors

   Even more servitors have arrived, drawn by the core's power. Protect Tassi so she can finish the invocation.

6. Inspect the Broken Hellfire Core

   Tassi loosed the Hellfire Core's power, slaying scores of demons but shattering it in the process. Inspect the remains.

7. Talk to Tassi

   The core doesn't look like much more than a pile of rubble. Talk to Tassi and report your findings.