Requirements
Members can buy the cape and hood on the top floor of the Varrock Museum for 5,000,000 coins from the museum guard. If anyone that hasn't met all requirements tries to touch it, they will be turned into a random animal (including monkeys, squirrels and chickens) and knocked away from the cape. They will also be given a list of remaining requirements.
Regular
The non-trimmed cape can only be worn by players who have:
All skill levels at maximum (120 Dungeoneering and 99 in all other skills).
All quests completed (Including Odd Old Man's wish list and Fur 'n' Seek).
All tasks completed.
All magic spells unlocked from Livid Farm.
Bones to Peaches unlocked from the Mage Training Arena.
Unlocked the Tune Bane Ore spell from a scroll in Ritual of the Mahjarrat.
All Varrock Museum Kudos earned.
Unlocked use of the Abyss.
Unlocked all Music tracks.
Completed The Curse of Zaros miniquest.
Completed the Hopespear's Will miniquest.
Completed the Fight Kiln.
Obtained Tarn's Diary in The Lair of Tarn Razorlor.
Returned Clarence to rest.
Reached the end of the Stronghold of Player Safety.
Reached the end of the Stronghold of Security.
Hunted the Thalassus ten times after the Deadliest Catch quest.
You must have claimed a reward from Claus the chef for doing him a favour after completing Carnillean Rising.
You must have scored at least 1,111 in a session of Big Chinchompa Distraction and Diversion.
Completed all of Doric's and Boric's tasks following What's Mine is Yours.
Completed the player-owned port tutorial.
Must have unlocked the Enhanced yaktwee stick by catching 1,000 charm sprites.
Trimmed
To wear the trimmed cape, you will need the following in addition to the previous requirements. Note that investigating the empty cape rack in the Varrock Museum will provide a list of things still to be done.
Wearing the completionist hood and using the untrimmed completionist cape's "features" menu while in your inventory will show an option to remotely check the trimmed requirements you still need in your chatbox in-game.
4,000 Chompy kills.
Scabarite research completed.
Highest rune shop unlocked from Ali Morrisane.
All hot-air balloon travel routes unlocked.
Eagle transport routes fully unlocked.
Defeated the 4 sub-bosses in the Pollnivneach Slayer Dungeon after Smoking Kills.
Unlocked ability to craft all Slayer items and to deliver killing blows quicker.
Master White Knight rank obtained.
Flying broomstick unlocked. (Includes unlocking the teleport option & getting all magic XP)
Found all hidden treasure from Making History.
Achieved a score of 1,250+ in Conquest.
Unlocked the full power of the Ivandis flail and blisterwood weapons. (500 vyrewatch corpses burnt.)
Speak to Lanthus while wearing a full set of profound decorative armour.
Unlocked maximum access to Mobilising Armies rewards. (401 Rank.)
Defeated all champions.
Achieved level 5 in each Barbarian Assault role.
Completed all court cases.
Completed 25 chimp ice deliveries.
Completed all Barbarian Training with Otto.
Found all barbarian notes in the Ancient Cavern.
Unlocked all rewards from the Artisans Workshop.
Obtained all circus clothing.
Completed the Dahmaroc statue in your player-owned house.
Unlocked the scroll of life ability.
Unlocked the scroll of cleansing ability.
Unlocked the scroll of efficiency ability.
Earned the Vyrelord/Vyrelady title after the Branches of Darkmeyer.
Made a Zaros symbol in Char's training cave.
Attain the highest Esteem rank possible (rank 1) from training in the Runespan.
Obtain Song from the Depths hidden rewards.
Obtain all the dragonkin journals by killing the Queen Black Dragon.
Acquire a champion's tackle box from the Fish Flingers distraction and diversion.
Explore the Eastern Lands as far as the Pincers from your player-owned port.
Complete the Hyu-Ji and Quin storylines from your player-owned port.
You must have personally finished Vorago with the Maul of Omens.
You must have earned the right to wear the title 'of Daemonheim'.
You must have survived the Shadow beneath the barrows.
