Wage Slave to Archmage：An Isekai LitRPG Adventure (BOOK 4) (Wage Slave to Archmage: An Isekai LitRPG Adventure)

To save Lorin from Abyssal corruption, Finn and his party journey to the City of Molten Iron, hoping gold will buy them the life-saving gear they need.
The dwarves have other plans.
Their elder names a descend into the Magma Chasm, brave the ruins of an ancient kingdom swallowed by molten stone seven thousand years ago, and recover the lost Emperor’s Forge Hammer.
But the depths hold more than steel-melting heat and monsters that shrug off magic. Something Abyssal is stirring beneath the city.
And while Finn fights to survive below, the City of Molten Iron is thrown into lockdown above. A string of gruesome murders has left the streets soaked in fear, the victims hollowed out by strange living shadows. Whoever is behind it knows far too much about Finn’s every move.
With danger closing in from every side, Finn has to strengthen his team fast—and master more magic before time runs out.
Even Winnie—the Cleric sent to spy on him—is starting to see him differently.
She once dismissed him as a greedy Novice Mage.
Now she can’t look away.