There are enough unmissable costumes that this is possible to do even after you've beaten the game if you're willing to grind out any extra spending money needed by fighting forest wolves / canadian dire animals. South Park: The Stick of Truth Costumes Guide
This costume list is organized by order of the in-game Collectibles>Equipment screen. Missable items are marked. Costume Sets that are found together are listed together.
Crown of Anal Pleasure — Obtained automatically after disarming the snuke inside Mr. Slave.
Barbarian Helmet — In Vancouver travel to where the Duke of Vancouver is located in the North side of town. To his left there is a red bed. Smash the wall north of the bed and it is located within the chest on the other side.
Barbarian Armor — In Canada the Prime Minister will be trapped in a cave. There is a treasure chest located in the upper left of this same room. The armor is located inside.
Barbarian Gloves — In Canada you must be on the quest “Big Game Huntin’ with Jimbo”. In the NorthEast portion of the map there is a spiderweb. Call out and defeat the Canadian Barking Spider. Once defeated you will get them automatically.
Minstrel’s Set — Purchased from the shop in the Elven Kingdom.
Wife Beater — Inside Kenny’s garage after defeating the meth tweakers it is in the yellow chest next to the propane tank fueling the burner on the ground.
Leather Sett — Purchased from the girls’ hideout.
Bling — In the police station evidence room. There is a yellow chest you can open after climbing a ladder.
Training Gloves — Purchase from the bum outside of U-Stor-It.
Cheese Set — Purchased from Mr. Mackey.
Condom Cap — [Missable] In the yellow chest right after turning on the flash light in Mr. Slave.
Crab Set — You must first obtain the Nagasaki spell. Deep in the sewers you will see a crab person banging drums. Break the rock to the right with Nagasaki to get back to him. It is inside the chest behind him.
Surgical Set — During the Unplanned Parenthood visit for the Girls you will be required to pick up these in order to get into the Records Room.
Druid Crown — In the yellow chest in the top area of the garage next to Pete Melman at address 2210.
Druid Robes — In the yellow chest in the top area of the garage at Stan’s house at address 2001.
Druid Gloves — Inside of the yellow chest within Butters’ garage.
Du Rag — Purchase from the bum outside of U-Stor-It.
Wood Elf Cap — [Missable] Obtained from a yellow chest on the second floor of the Giggling Donkey after defeating Jimmy. It’s in the same room.
Wood Elf Armor — Obtained automatically in the giggling donkey after defeating the group of 3 elves with the anti-magician in the living room.
Wood Elf Gloves — [Missable] Looted from a wood elf in the attic of the giggling donkey.
Friar Set — After recruiting Tweak, it is in the yellow chest on the ledge in the background of his work area behind the coffee shop.
Gnome Helmet — [Missable] After entering the hole in your room climb up the first set of wires and it will be on the pouch to your right.
Gnome Clothes — [Missable] After viewing your parents getting intimate go into the next room. Climb the wires, break the wall to your immediate left, then they will be in the pouch past the 4 batteries.
Gnome Gloves — [Missable] You’ll be forced awake and into a fight with 4 gnomes. After defeating them twice you will be in your room and it will be on one of the defeated underpants gnomes.
Goth Set — Purchase from the bum outside of U-Stor-It.
Sweaty Headband — Purchase from the bum outside of U-Stor-It.
Clyde’s Helmet — Purchased from the shop at Kupa Keep after Clyde has been banished.
Gas Mask — Purchased from Jimbo.
Jester’s Cap — Found in a yellow chest in Jimmy’s garage. Also known as the Giggling Donkey.
Khan Set — Purchased from the shop at Kupa Keep.
Knight Helmet — [Missable] Yellow chest in the right tower where you see Ike and the pirate girl fighting another Cyclops.
Knight Armor — [Missable] After defeating Craig and his clones it is in the yellow chest in the upper left of the room.
Knight Gauntlets — [Missable] Cyclops child in the first room of Clyde’s fortress. He is on the upper level. Same room as the lawn dart’s location.
KKK Set — Purchased from the shop at Kupa Keep.
Monk Set — Purchased from the shop in the Elven Kingdom.
Necromancer Hood — [Missable] On one of the students attacking your fellow human/elf when you first go up to the second floor upon your second visit to the school.
Necromancer Robes — [Missable] On one of the nazi zombie gingers in the room near the entrance to the Boiler Room upon your second visit to the school.
Necromancer Gloves — [Missable] On one of the students directly before entering the hallway from the cafeteria upon your second visit to the school.
Bishop Set — Purchased from the shop in Banff.
Woodsman Sep — Purchased from the shop in the Elven Kingdom.
Alien Helmet — [Missable] In a purple chest after freeing yourself from the probing machine on the spaceship. It’s behind Randy.
Alien Suit — [Missable] After taking the elevator down to the room with a tube at the bottom with 2 aliens inside and several platforms and consoles to interface it’s in the purple chest to the left of the elevator.
Alien Gloves — [Missable] Dropped from the space officer in the same room with the third panel to free Randy on the alien spaceship.
Fairy Princess Set — Purchased from the girls’ hideout.
Squire Helmet — At U-Stor-It climb onto the roof through Professor Chaos’ Lair then use your alien probe to reach the yellow chest in the background above unit 240.
Squire Armor — After obtaining the alien probe head back to Token’s house. Head into his garage and to the upper level. Use your alien probe to go onto his roof. Smash the chimney and it located within the yellow chest.
Squire Gloves — Use the Alien Probe to get on top of the bank. Then use the Alien Probe again to get on top of Tom’s Rhinoplasty. It is in the yellow chest on the roof.
Stupid Spoiled Whore Set — Purchased from the girls’ hideout.
SWAT Set— [Missable] After breaking into the C.I.A. building where the mall was for the first time it’s on one of the guards killed by the Nazi Zombie.
Tinfoil Hat — [Missable] Obtained from the Alien Conspiracy Hobo on the alien spaceship. After you've lowered the forcefield you must take the ladder down from in front of the entrance to where Randy is and he is hiding in a pile of garbage.
Underpants “Helmet” — [Missable] Whilst on the dresser watching your parents get intimate you will be attacked by 3 gnomes. It will be on one of their defeated bodies.
Valkyrie Set — It is located inside the girls’ hideout once you unlock the ability to free roam inside. On the left side of room behind Jessie it is located inside a yellow chest.
Witch Hat — You need the gnome dust for this. It is located underneath the bench outside of Tweak Bros. Coffee.
Witch Robes — To the left of the school right before you enter the forest there is a log. Use the gnome dust to shrink down and the item is located within the yellow pouch inside the log.
Witch Gloves — To the left of the Giggling Donkey there is a small hole in the fence. They are located within the yellow chest.
Made possible by contributions from Sherufanir, xDragonwiingz, zeroXsnake7 & PS4Trophies. Edited by WoozleWozzle.