Is It Wrong To Level Up In A Dungeon?

!Notice
[Your "Critical Attack" skill has leveled up!]

[Level Up!]
[Level Up!]
[Level Up!]
[Level Up!]

[Name: Bell Cranel]
[Level: 51]
[HP: 11,620]
[MP: 1,105]
[Fatigue: 0]

[Penalty Quest: Survival]
Goal: Survive for the allotted amount of time.
Allotted time: 4 hours
Time left: 0 hours, 3 minutes, 19 seconds

Bell let out a slow breath, the exhaustion barely registering now. The countdown was almost up.

"Just three more minutes, and I'll be back at the Job Change Quest..."

His mind drifted to his weapons. Kasaka's Fang had proven ineffective against the armored knights, its once-reliable edge struggling to pierce their defenses. Hestia's Knife was different—it was growing with him, but a second, equally capable blade wouldn't hurt.

With a flick of his fingers, he pulled up the shop menu. His eyes scanned through the listings, and then—

"Perfect."

The Knight Killer. A dagger designed for tearing through armor. The price? A steep 2.8 million gold.

Bell didn't hesitate.

!Purchase Complete!
[Item: Knight Killer]
Level of Difficulty: B
Type: Dagger
Attack: +75
Effect – "Knight Killer": Attacks against armored units inflict +25% additional damage.

A sleek weapon materialized in his hand. The blade was thin but wickedly sharp, its weight perfectly balanced. He gave it a quick twirl, nodding in approval.

[Rune Stone: The Commander's Touch]
Breaking this rune will grant you a skill.

Without a second thought, Bell crushed it in his palm. A rush of power surged through his body, his nerves tingling as new knowledge seared itself into his mind.

!Notice
[You have learned Skill: The Commander's Touch.]

[Skill: The Commander's Touch Lv.1]
Type: Active Skill
Mana Cost: None
Effect: Grants the ability to physically control objects without direct contact.

Bell's lips curled into a smirk.

"No mana cost? This is perfect."

The countdown ticked away.

[Time left: 0 hours, 0 minutes, 3 seconds.]
[Time left: 0 hours, 0 minutes, 2 seconds.]
[Time left: 0 hours, 0 minutes, 1 second.]

!Notice
[The Penalty Quest has ended.]

In an instant, the world around him shifted.

Bell barely had a moment to breathe before a horde of knights swarmed him, their polished armor gleaming beneath the dim light.

He tightened his grip on the Knight Killer and Hestia's Knife.

Then, he moved.

SLASH!

His new blade cut through steel like butter.

Bell's blade sliced through another knight, its armor crumbling under the force of his strike. Yet, no satisfying surge of experience followed. No level-up notifications. Nothing.