The Last Guardian

Lock, Stock, and Barrel

There is a total of 48 barrels in the game. If you collect all 48 and feed them to Trico, you'll earn the gold trophy, Lock, Stock, and Barrel. You can collect the barrels over multiple playthroughs if you need - but you must find each individual barrel. It won't do to feed Trico the same barrels over and over.

Feeding Trico barrels will also unlock various costumes you can wear in New Game +. You can just feed Trico the same barrels over and over to unlock these costumes. 96 barrels are required, over as many playthroughs as you need to collect that many, to unlock every costume and option.

I will mark barrels with this formatting in the walkthrough to make them easy to find. Each one will include numbering to show the order I found them, and to help you keep track of where you're at in your barrel hunting.

 Barrel 1
Feed Trico at the beginning.

 Barrel 2
Feed Trico at the beginning.

 Barrel 3
Feed Trico at the beginning.

 Barrel 4
Before the hole with the white mist.

 Barrel 5
Before the hole with the white mist.

 Barrel 6
High up in the very first cave.

 Barrel 7
Upstairs next to the underground cave lake.

 Barrel 8
Upstairs next to the underground cave lake.

 Barrel 9
Upstairs next to the underground cave lake.

 Barrel 10
Hidden next to the underground cave lake.

 Barrel 11
After Trico jumps above the makeshift bridge.

 Barrel 12
On the other side before climbing the chain short after barrel 11.

 Barrel 13
In the mine like alcove after climbing the chain from barrel 11.

 Barrel 14
Shortly after entering the building after the first stained glass eye.

 Barrel 15
In the deadend after climbing around in the building from barrel 14.

 Barrel 16
Around the walkway around the top of the room you climb after switching areas from the blue pot.

 Barrel 17
Around the walkway around the top of the room you climb after switching areas from the blue pot.

 Barrel 18
In the are where you are fighting armors below a broken stone bridge.

 Barrel 19
At the end of the path along the building with the broken bridge ahead.

 Barrel 20
Inside the crate where you learn Tricos commands.

 Barrel 21
Inside the crate where you learn Tricos commands.

 Barrel 22
Inside the crate where you learn Tricos commands.

 Barrel 23
Inside the crate where you learn Tricos commands.

 Barrel 24
Outside the yard where you learn the commands on this side of the broken stone bridge.

 Barrel 25
On the far end of the left of the arches just after the broken stone bridge.

 Barrel 26
In the room with the cylinder-shaped object.

 Barrel 27
On top of the structure where you swing along the mobile chain.

 Barrel 28
On the arches below the giant stained glass eye.

 Barrel 29
On the arches below the giant stained glass eye.

 Barrel 30
The mean barrel deep below the mine cart.

 Barrel 31
After getting down from being stuck on the tree.

 Barrel 32
After fighting the armors with glass eye shields.

 Barrel 33
Shortly after barrel 32.

 Barrel 34
The throw it through the elevated hole barrel.

 Barrel 35
In the coliseum with the catapult.

 Barrel 36
Right above the coliseum fight area with the catapult.

 Barrel 37
On the Trico ride after the coliseum.

 Barrel 38
Inside a cave after Trico learns diving.

 Barrel 39
After escaping the Cylinder Cage.

 Barrel 40
After escaping the bad Trico area through the hole Trico made.

 Barrel 41
After Trico escapes by flight.

 Barrel 42
Behind some mine carts after you escaped from the second Trico attacking.

 Barrel 43
Behind some mine carts after you escaped from the second Trico attacking.

 Barrel 44
Shortly after barrel 42 & 43.

 Barrel 45
Shortly after barrel 42 & 43.

 Barrel 46
At the bottom of the white tower.

 Barrel 47
At the bottom of the white tower.

 Barrel 48
After riding up the stone pillar inside the white tower.