The promotion to Protector requires you to complete two quests – “Den of Thieves” and “Amelion’s Debt”.
Den of Thieves – Talk to Azzan in Anvil to receive a quest to eliminate a den of thieves. He pairs you up with Maglir and send the two of you need to ask around town to find out if someone has any information. Eventually, someone will direct you to speak to Newheim the Portly and he will tell you that he heard the thieves were hiding in Hrota Cave, north of Anvil. Travel to the cave and kill all of the thieves that you find there. If Maglir gets in your way, you can instruct to wait near the entrance rather than follow you around. Once all the thieves are dead, return to Azzan to receive your reward.
Amelion’s Debt – Talk to Burz gro-Khash in Cheydinhal and he will send you to talk to Biene Amelion in the town of Water’s Edge, north of Leyawiin. She will ask you to recover her grandfather’s sword and cuirass from the family tomb, so she can sell them to settle her father’s debt. You have two choices – you can either give Biene the 1000 gold directly and she will allow you to keep the armor if you like or you can travel to the tomb, retrieve the items, and return them to her. Regardless of the choice that you make, return to Burz gro-Khash when you are done and receive your reward.