The Fremennik Isles

In Jatizso, talk to King Gjuki Sorvott IV in the building with tiled floors.

Give the King a raw tuna or use the tuna on the cat.

Can be obtained from the cage/harpoon fishing spots to the south.

Give the King your ores.

There is a mine down the stairs to the north-west if you didn't bring them.

Open the chest (behind the throne) and take the silly jester outfit.

Return to Rellekka and Travel-Neitiznot Maria Gunnars.

Equip the silly jester outfit, with nothing in your hands, and talk to Slug Hemligssen, north of the bank.

Talk to Mawnis Burowgar in the building south of the bank. Dismiss any Summoning familiars and pets.

Use the jester controls to follow Mawnis's instructions.

Return to Slug Hemligssen.

Remove the silly jester outfit (keep it for later) and talk to Mawnis Burowgar.

If you don't have 8 ropes:

Kill yaks for 8 yak hair and spin them on the spinning wheel in the southeastern-most house.

Optionally, make an additional rope for later in the quest.

Take three yak-hide for later if you don't already have them.

If you don't have 8 split logs:

Cross the bridge to the north.

Chop 8 arctic pine logs if you don't already have them.

Optionally, chop 2 more for later in the quest. Don't split these 2, keep them whole.

Use logs on the woodcutting stump across the bridge to the north (not a regular tree stump).

Talk to Mawnis Burowgar with the items.

Talk to Thakkrad Sigmundson about the bridges.

Right click bridges, north of Neitiznot, to repair them.

Talk to Mawnis Burowgar.

Return to King Gjuki Sorvott IV on Jatizso.

Tax the shop keepers of Jatizso:

Hring Hring must pay 8,000; he is in southwesternmost house.

Skuli Myrka must pay 6,000, north of Hring.

Vanligga Gastfrihet must pay 5,000, north of the king's palace.

Keepa Kettilon must pay 5,000, east from Vanligga.

Return to King Gjuki Sorvott IV.

Tax all bearded people for 1k:

Hring Hring.

Raum Urda-Stein in a house with Hring Hring.

Skuli Myrka, north of Raum and Hring.

Keepa Kettilon, he is in the northeasternmost house.

Flosi Dalksson in a house with Keepa Kettilon.

Return to King Gjuki Sorvott IV.

Return to Rellekka, and take the boat to Neitiznot.

Equip the silly jester outfit and talk to Slug Hemligssen.

Empty your hands and entertain Mawnis Burowgar again.

Talk to Slug Hemligssen.

Talk to King Gjuki Sorvott IV in Jatizso.

Make sure King Gjuki Sorvott IV gives you the Royal decree first. You may need to speak with him twice.

Remove the silly jester outfit and talk to Mawnis Burowgar in Neitiznot.

To obtain a yak-hide armour set:

Kill three yaks and give the three yak hides to Thakkrad Sigmundson to tan.

Craft the top and legs with thread in the backpack.

Thread can be bought from Jofridr Mordstatter in the building with the bank chests north of Mawnis Burowgar.

Talk to Mawnis Burowgar when you have the yak armour.

Make sure Mawnis mentions "Fremennik round shield" in order to craft the shield. You may need to speak with him twice.

To obtain a round shield:

Buy 1 bronze nail from Jofridr in the bank, obtain 1 rope, chop two arctic logs

Take everything to a woodcutting stump and interact with the woodcutting stump to craft the Fremennik round shield.

Talk to Mawnis Burowgar with these items.

Prepare for battle then enter the Ice Troll Caves to the far east of the northern-most island.

Protect from Ranged is advised. Familiars are not allowed. Equipping the Fremennik round shield drastically reduces Range damage taken from Ice Troll Females. Yak-hide armour drastically reduces Melee damage taken from Ice Troll Males, Runts, and Grunts. If you do not have good Ranged Defence, bring high-healing food. Even with Protect From Ranged active, the trolls quickly deplete your health. The Ice Troll King has a very high defence to ranged, so it is not advised to kill the boss with ranged weapons.

Talk to or right click Request-supplies on Bork Sigmundson for seven Tunas, four 4 dose Strength potions, and two 3 dose Prayer potions if you need supplies.

Kill 10 ice trolls (killing the trolls by farcasting the ones on the east does not count).

There is a chatbox message saying "You have defeated enough trolls to attack the King."

Cross the bridge, kill and then decapitate the Ice Troll King.

Take the head to Mawnis Burowgar.

Quest complete!