Welcome to this incomplete and unfinished guide.

Many of the achievements are missable, as you can't go back to earlier parts of the game. I wrote down the info for all the ones I collected myself. However, I got stuck in a part of the game where you have to do some challenging moves within a time limit and kept failing at that part, so that is where I stopped playing.

This guide is very incomplete and as far as I can tell atm will stay incomplete, but maybe it will help you figure out the achievements you're missing?

You have to collect more amethysts than this section tells you, but there are so many more in the game, just collect as many as you can along the way.

Finders Keepers
You collected 50 Amethysts.
Collect all the purple thingies.

Look at all that shiny purple
You collected 250 Amethysts.
Collecting, collecting, collecting!

Amethyst Hoarder
You collected 500 Amethysts.
More, more more!

Who is she? Violeta, and she leaves without a goodbye
You collected 1000 Amethysts.
Keep collecting them as 1000 isn't enough to buy all the items in the shop.



Not related to amethysts but another general achievement:

All day, every day
You recovered 1000 health points by drinking Mate.
Keep healing yourself when you get damage, the enemies drop energy to refill your drinking mate. The tracker for this achievement is bugged but the achievement itself isn't. I collected this around the are with Rocky.

You'll meet the merchant very early in the game, and he sells artifacts. Keep collecting amethysts, and at different times, you meet the merchant and can buy the artifacts he has with him.

Caburé Sword
Delicious and crispy sword.
This can be bought with Amethysts in the merchant shop.

Common Argentum Clothes
Apoka brand, 100% cotton.
This can be bought with Amethysts in the merchant shop.

Chest of Patacones
All these bills are worthless, they seem to be from a board game.
This can be bought with Amethysts in the merchant shop.

Bus map book of The Red Lands
For the lady's purse and the gentleman's pocket.
This can be bought with Amethysts in the merchant shop.

Costero Filleting
A peculiar painting style from an old coastal city, known for its nightlife culture.
This can be bought with Amethysts in the merchant shop.

Peculiar Samurai Figure
Apparently looking for a Fillet in an All-You-Can-Eat restaurant?
This can be bought with Amethysts in the merchant shop.

Company Oncube
What a wonderful Cube! I hope I don't have to throw it away soon.
This can be bought with Amethysts in the merchant shop.

MissingNo. Gun
The glitch changed its shape.
This can be bought with Amethysts in the merchant shop.

Gold Empanada
I lost a tooth trying to eat this.
This can be found in the first area even before you get a weapon.

This is a real weapon
What would a video game be without the ability to hit things?
Very soon after starting the game, you'll unlock this slingshot kinda weapon to attack things (mostly monsters :P)

99999 Games Cartridge
They all seem to be the same game with barely different colors.
When you get outside after getting your weapon, you will see a river running back toward the area you came from. Jump in the water and toward the area you came from to find this sneaky hidden item.

Stonake
What kind of snake is this?
The first enemy you'll encounter at the beginning of the game.

The first of the day but not the last
You drank Mate for the first time.
You can heal yourself by doing this. The button to do this on an Xbox gamepad is Left Trigger.

Who's a good buddy?
Of course you can pet the capybara.
You find the first capybara at the ruins. Petting them saves your game. <3

Angry Stonake
It sparks when it rolls.
In the ruins there is this small pit area full of snakes. Here, you'll encounter the angry snake for the first time.

Forest Seed
You found the Forest Seed.
Beat all the snakes in the pit to find the forest seed.

Ironic Tourist T-shirt
I visited the Uchu-guay and all I got was this lousy t-shirt
You have to find 3 cards for this guy at the camp, 2 of them are to the left of him and one is on the right side passed the middle path.

Open the gates!
You opened the gates to the Chaikurú Ruins.
You might need to first unlock the forest seed to be able to open the fates in the ruins?

Murgo
You defeated a Murgo. They're pretty annoying, aren't they?
You must defeat 3 of them to get further into the temple.

Condor Seal
You obtained the Condor Seal.
Found in the first temple you enter.

Saint Wich Flying Mila
A coatí and a magpie fought over my delicious taste.
After you get the Condor Seal, you can go to the right and to the back of the temple to find some spots that blow air to fly higher and higher to fly to the sandwich. The first airflow is behind the capybara.

The floor is lava
You stayed in the air for over 20 seconds.
Use an airflow after you have collected the Condor Seal to stay in the air for 20 seconds. Listing it here as this is the first spot you can do it, but know you can do it above any airflow.

Godot Plushie
It's so fluffy I wanna die.
In the area with the airflow and the switches to change the direction of the airflow, it is at the top on the right side.

Lost Civilization
You discovered part of the history of the lost civilization.
Check out a mural. I did this in the first temple, but I think it is also possible to unlock this at the mural you see when you first reach the Outer Ruins area.

Traditions of a lost civilization
You discovered the Mountain Temple Mural.
After you've done the area with the switches and the airflow, you'll get to an area where you see this huge mural on the wall in the back. Check it out to unlock this achievement.

Where it all began
You discovered the Sacred Yuca Tree Mural.
Check the mural on the ground in the ruin area.

What was that tremor?
I feel like someone is watching me.
You'll unlock this when going to the right after finishing the first temple. You'll meet Tuco, the merchant, where you can buy items with the Amythists you collected.

The Invaders
You discovered the Invaders Mural.
A little to the right of Tuco, you'll see this mural. Inspect it to get this achievement.

Back online
You reactivated the Chaikurú Inner Ruins.
Just a tiny bit to the right of the mural, you can activate this fountain kinda thing with the forest seed to reactivate the Chaikurú Inner Ruins.

Capygochi
You have to take good care of this capybara.
If you go all the way to the right and then toward the player, you find this hidden behind some snakes.

Unique Arts
You discovered the Chaikurú Combat Techniques Mural.
Follow the path into The River Road area to find this mural.

Chaikurú Survivors
You overcame the Challenge of the Yaguareté.
This is a challenge in this area, where you have to beat many enemies. I recommend standing on the outer circle when you put the marble in the hole so you can first kill the flying enemies before having to deal with the snakes.

The Guardian of the City
You discovered the Mural The Guardian of the City.
Can be found directly after the arena challenge.

Ask me about Magical Rangers
Why does everyone keep asking me about Magical Rangers?
Get both marbles in the slots at the bottom left of the screen to unlock the door to this artifact.

That golf was weird
You've completed the Chaikurú Testing Grounds.
Get both marbles to the right side of the maze.

Yaguareté Seal
You obtained the Yaguareté Seal.
A new ability! You find it in the Amethyst egg.

Spiritual Drink
Most Chaikurú festivities started with one of these.
You find this one in the area with the third tree you must cut down to progress further. It is on the left side in that area.

Prepared for battle
You discovered the War Cry Mural.
At the end of a winding road, you can find this mural.

What the hell was that?
Are you sure you should be hitting unknown objects like that?
Just past the last mural, there is this snake with an amethyst at the end of a tail that you must hit a few times.

Warrior King Memorial
You discovered the Chaikurú Warrior King Memorial.
Just past the creepy heads with glowing eyes.

Chaikurú War Helmet
Helmet used by Chaikurú warriors.
Behind the waterfall in the same area as the Warrior King Memorial.

Little Devil's Throat
That force of nature.
I got this after getting through the platform section in this area, but I have no clue why or how it unlocked. EDIT: The developers told me it is just for reaching this area.

Red Lands Hammock
A hammock from the local villages.
In the mountain area on the right side of this area. At one point, you can walk down to find an area full of sneaks and this artifact.

Wind Seed
You found the Wind Seed.
Can be found at the top of the observatory.

Snake Charmer
You defeated the Amaconda.
I struggled with the phase where he doesn't have the Amethist tail anymore, you have to hit him between his head and his body.

Mategol
MATEGOOOOOOOOOOOOL!
During the escape from the Amaconda, at the start of that part on the right. check out this video:










Run, Runa, Run!
You escaped from the Amaconda.
This is challenging, but you can do it!

No achievements here as far as I could tell, but on the plateau in between the platforms, there are a lot of amethysts to collect in the snake eggs.

Big Gold Nugget
We're rich!
When you jump from platform to platform, you can go to the left at one point; on the next platform, you can find this artifact.

Uga-Uga Mask
Last night, I had a really wild dream… It was about a cowardly dog.
At one point, you can go to the right or up and left; to the right are purple crystals, but go first to the left to get this artifact.

I hate Mimics
You defeated a Crabystal.
At the beginning of this section, by the capybara, there is one to the right but also on your way up.

Salami Nunchucks
Salaaamiiiii!
After you see some green patches there is a sneaky way up north where there is a big mushroom. Defeat all the bats to get this artifact.

The cookies are a lie
There are only sewing supplies inside.
Before you go to the right under some spiderwebs, first go to the left and then south to find this artifact.

Lemonetto
Protects of your lawn with the power of Vitamin C.
Very close to the start where a huge spider starts following you, it is on the right side just outside the platform you're running on.

Seal of the Carayá
You obtained the Seal of the Carayá.
Found at the beginning of this new area.

The Descent
You discovered the Chaikurú Descent Mural.
This mural becomes visible when you lower the water by pulling the two handles on both sides of the platform in the middle.

Rocky Helmet X
Jumps and shoots.
When the water is lowered so much that the ground is viable, go back to the capybara and just hidden behind the mural is this artifact.

Border Mask and Flute
They say that the right melodies can make you travel through time and space...
This can be found at the windmill before you use the air stream on top of the windmill.

Big-eared Onion
They are similar to Ogres; both have layers.
When you're in the room with the capybara in the middle on a leaf, it is in the tower at the entrance of that room; you get there by getting higher in the room and then swinging there instead of taking the normal path.

Rewardo, el Gaucho
Luckily he doesn't have gloves, because otherwise it would cost a fortune...
Under the bridge, there is a hidden area where this artifact is. On the other side of the wall, some rocks can be used as stairs.

The Hardheaded Ones
You defeated the three Golems in your path.
Stun them by slinging your weapon toward them and then attack them a few times. repeat this until they are dead.

Sheep Rider Monk
They tamed sheep and any creature with their chant 'Wololó'.
You'll see this behind a fence. go to the next room and left of the capybara there are rocks you can destroy to get to the other side of the fence.

The Great Sage and I
You discovered Rocky's Mural.
This mural, at the end of the path with fences and golems, will teach you more about Rocky.

Memorial of the Fallen
You discovered the Memorial of the Fallen.
Another mural, this one on the other side of the water, can be checked out by talking to Rocky while standing at the edge.

Spear and Fang
They belonged to a primal warrior and his faithful Jurassic companion.
By the next capybara, ask Rocky to stand on the button so the fence goes down and you can pick up this artifact.

Golems at Work
You discovered the Golems at Work Mural.
A mural in the middle of a path after an obstacle course with Rocky.

Simon Says
Congratulations! Your short-term memory hasn't died yet.
You have to sling your weapon to the correct crystal in the correct order. The hardest challenge here is not your memory but aiming toward the right crystal.

3-Star Dragon Cube
Let’s go find… the Dragon Cubes! ♫
There is this miniature maze where you and Rocky have to stand on buttons and switch handles to get a marble to the end. It is hidden under a part of this maze.

Rain Seed
You found the Rain Seed.

Sun Seed
You found the Sun Seed.

Not loud enough
You reflected the Murgo’s sonic wave 10 times.

Turn on the lights
You lit the Amethyst Lanterns.

Amethyst Keeper's Memorial
You discovered the Amethyst Keeper Memorial.

Great Sage Memorial
You discovered the Great Chaikurú Sage Memorial.

Is this the ending you wanted?
Maybe you're a bad person.

Uchuguay
Is this the real life? Is this just fantasy?

Friendship Bracelet
From my best friend.

Mechalomaniac
You defeated Mecha Ritchter.

Runa in the Big City
You arrived at the Hidden Chaikurú City.

Mom, you cut off all the power
You crossed the Mushroom Cave without lighting them.

Tribute to the Gods
You threw a barrel as a tribute into the temple's abyss.

Sleeping with the fishes
You threw Rocky into the cenote of the Memorial.

Amethyst Keeper Rod
Now you can work as a lamplighter.

MissingNo.
This glitch seems to have a life of its own.

The Golden Goat
No one can beat it at ball games.

Kapyroto Figure
The sky shines around me ♫

Crystal Stonake Statue
A crystallized statue of a winged reptile.

Mythical Delivery Man
Figure of a mythical delivery man of... fruit salad?

Cherry Blossom Bonsai
I heard the howl of a wolf.

Not-So-Stealthy Facón
I love the skin of my knife.

Ronroco Instrument
Where is that enchanting music coming from?

Santereré Grail
This beverage raised the dead back to life.

Naughty Canine Mask
Strange mask of the Naughty Canines Tribe.

Coatí Souvenir from Mar del Plátano
It tells me the weather and threatens me… with a butter knife?

Untouchable
Defeat all enemies in the Challenge of the Yaguareté without taking damage.

The Stand
Yare Yare Che...