In Oradam Village, interact with the Republic Communications Terminal to get this heroic mission. It reads:
[HEROIC 2+] Cutting Off the Head
Posted by Ord Mantell Central Authority:
A tribe of Mantellian Savrips have been attacking patrols from the island near Oradam Village. Negotiations with the bastial creatures are not possible. Ord Mantell Central Authority is offering a bounty on the leaders of Savrip tribes. Return to this terminal when the task is completed. Than you for your assistance..
Check your mission log for the full details
Repeatable - This mission can be repeated once per day. It is reset in the morning
Ord Mantell authorities report that an unusually hostile tribe of Mantellan Savrips have been attacking Republic patrols on the island near Oradam Village. The Republic is offering a bounty for the tribe's chieftains in an effort to reduce their aggressive behavior. Kill the savrip chieftains on Savrip Island
Your task is to defeat 5 Savrip Chieftains. This is a Heroic 2+ mission which means if attempted at level 5 you should have at least 2 people in your party. It is possible to solo it if you are level 7 or above and have a companion. If soloing this mission, make sure to have medpacs handy in case you run low on health. Also this mission should be done with other heroics in the area such as Buying Loyalty.
Head to Savrip Island and start hunting the chieftains. They will usually be in groups of 2-3 accompanied by a lesser Savrip. Once you have killed 10 Savrip Chieftains, your quest log will update: "You have defeated the savrip chieftains on Savrip Island. Return to the Republic Communications Terminal in Oradam Village"
Go back to the terminal from which you got the mission and interact with it to complete the quest. You will be able to select one reward from among a rare (blue) armor, or a Ord Mantell Commendation. This is in addition to the credits and experience points reward.
This completes the mission "Cutting Off the Head".