My Demon Lord, Drive Back the Heroes!

Congratulations! We are pleased to inform you that you have been hired by Dungeon Company. Please report to Human Resources tomorrow to complete your onboarding paperwork and coordinate your schedule. The company will assign you a number of probationary employees to help you build your own team and keep it running smoothly.

You will be protecting the assets of the company's clients by driving back human heroes. Use magic, traps, combat, and every means at your disposal to make them leave the dungeon or die here.

Remember: even the smallest mistake could ruin your entire career.

Good luck, new hire.