Royal Trouble

Fast access via Ring of Wealth (or higher tier luck enhancer rings, which offer unlimited teleports), fairy ring, or the sailor near the larger boat north of the Rellekka market.

Speak to either Prince Brand or Princess Astrid. Wait for the cutscene.

Talk to King Vargas.

Talk to Gardener Gunnhild at the flax patch.

Run east over to Etceteria and talk to Queen Sigrid.

Talk to Matilda in the Etceteria castle courtyard.

Talk to Queen Sigrid again.

Talk to King Vargas.

Talk to Advisor Ghrim.

Talk to the Sailor on the docks in Miscellania (caution to not travel to Rellekka).

Talk to King Vargas again with at least 1 inventory space free.

Gear up for the final fight now. Having 8 free inventory spaces is recommended.

Go downstairs and enter the dungeon ladder within the southern portion of the Miscellania courtyard.

Go into the bar to the east, and speak with Donal.

Head north to use the mining prop on the crevice, and go through.

Pick up the engine, 3 pulley beams, 3 beams, and 2 rope from the crates.

There is a bug where sometimes you won't be able to pick up the engine. Leave the dungeon and come back, or try to use area loot.

Add 5 coal to the engine (coal can be obtained by mining the rocks in the cavern).

Use a pulley beam on the broken scaffolding.

Use a beam from your backpack on a pulley beam in your pack, and you'll get a long pulley beam.

Attach another beam from your pack to get a longer pulley beam, use that on the scaffolding.

Use your last pulley beam on the scaffolding.

Use your rope on the scaffolding.

Use the third beam on the platform (north side).

Use the engine with coal in it on the engine platform (middle).

Once complete you can now use the lift.

Pick up the plank off the ground, and enter the tunnel.

Continue east.

Use the rope in your inventory on the northern end of the rock and swing across the river.

Search the fire remains to obtain a burnt diary.

Use the plank to cross the small rocks.

Search the other fire remains (2 fires before vents) to add pages to the diary.

The steam vents in this area will hurt you slightly. Surge across to avoid any damage.

Make your way to the end of the tunnel, collecting the 2 remaining diary pages.

Read the burnt diary.

Squeeze through the crevice at the end.

After the cutscene, finish the dialogue with the teenagers.

Continue down the tunnel, squeeze through the crevice.

Kill the Giant Sea Snake, and pick up the heavy box.

Go back through the crevice and a guard will drop a rope down to help you up.

Talk to Queen Sigrid with at least 1 free inventory space.

If you forgot to pick up the heavy box, it can be obtained by speaking with the guard by the escape hole.

Talk to King Vargas. You can drop the empty box and diary.

Quest complete!