How did Thor get the Thunderclap Hammer?

Within a cavernous space, Mike slowly advanced. 

The massive heartbeat echoed around him, creating an immense pressure that felt as if he were under thousands of feet of ocean water, suffocating and intense.

"Thump—"

As Mike moved forward, he checked his status.

"Charge Up, Max."

"Inhibition Orb, Forbidden Spell Scroll."

Mike slung the Thunderclap Hammer across his waist, concealed by his cloak, and switched the Force of Nature to his left hand. Whether casting spells with his left or right hand made no difference to him. However, when it came to swinging a hammer, he preferred using his right hand.

Everything was ready, and Mike glanced at the distance indicator provided by the Eye of Truth.

[Distance to the final boss—1142 yards]

He was very close now! To be safe, Mike directly used the Forbidden Spell stored within the Forbidden Spell Scroll.

Flame of Life!