Use the Sir Gnawser Chow charm while on the pillows at -1247.89, -932.90, 459.17 (cuz, like, you are gonna faint when you possess the rat and, like, you want a soft place to fall down, kk?)
Kill Momo the monkey at -1262.62,-935.77, 448.01 right behind the building.
Slip through the door behind Momo and kill the ornate chest in the store room to get the key. Gnawser has some AE arts so be aware that you may get attacked by some guards. So long as you kill the chest first and get the key-update, it really does not matter.
Nezzin has given me a charm that should allow me to possess one of the rats of Gunthak's Shanty and get into tight spaces that someone of my size never could. I should use this to steal a key to the Captain's room from the otherwise unaccessible storeroom near the back of the town. Once I have it, I should steal into the Captain's room and slay him.
I need to capture a rat to possess.
I need to catch a rat inside of Gunthak's Shanty to be my vessel.
I have caught a rat for my vessel.
I have captured a rat to possess.
I need to make sure to have my charm in my possession and then click on the rat to take him over. Once I am in his body, I should search for a rat-size entrance to the storeroom and retrieve the key.
I need to make sure to have my charm in my possession and then click on the rat to take him over. I should find a comfortable spot in Gunthak's Shanty to leave my own body behind. The wenches must have cushions somewhere.
I have possessed Sir Gnawser Chow!
I need to defeat the guardian of the storeroom, Momo the monkey.
I have defeated Momo.
I should now use my rat size body to sneak through the Shanty and get into the storeroom. There, I need to kill the enchanted chest and take the key.
I have obtained the key to the Captain's quarters!
I have managed to steal the key to the Captain's quarters as the rat!
I need to enter Captain Skullcleave's quarters and slay him.
I need to use the key on the ship wheel in the center hut of the Shanty to get up to Captain Skullcleave's hideout.
I have used the key to get up to Captain Skullcleave's hideout.
I should kill Captain Skullcleave.
I have killed Captain Skullcleave.
I have entered Captain Skullcleave's quarters and taken him out.
I am to report directly back to Shadowed Cleft that I have eliminated Captain Skulclleave.
I need to report to Vip Gloryshield in Shadowed Cleft.
I have reported to Vip Gloryshield.
I have reported back to Vup Gloryshield that Skullcleave has been eliminated.
I have slain Captain Skullcleave, shaking up the Brokenskulls of Gunthak's Shanty.