Take 100 gold with you to start the quest

Goto Nasty Looking Man in Silvermere (Wailing Hound Tavern)
Greet Nasty
Ask Nasty Adventure
Ask Nasty Gold

Goto Balthazar in Rhudaur
Greet Balthazar
Ask Bal Work
Ask Bal accept

Goto Commander Markus in Black Mountains
Kill Commander Markus
Take the box and head of Commander Markus upon his death

Goto Balthazar
Ask Bal reward

You have completed the first evil quest! You will get a ruby-eyed skull ring and 150K exp!

Credits:
Frost