So there I was, just minding my own business in Natlan, when I stumbled upon this guy named Mamull waving a Luxurious Chest in my face like a carrot on a stick. "Come play my Painted Stone challenge!" he says. "Win big!" And I'm thinking, 'easy money, right?' Boy, was I wrong. This dude is as shady as a slime in a snowstorm. But don't worry, I've got the inside scoop on how to turn the tables on this scammer and walk away with the Alert And On Guard achievement. Let me tell you the story of how I exposed Mamull's little game. 🎮
Finding Mamull and His Too-Good-to-Be-True Offer
First things first, you gotta find this guy. He's hanging out southwest of the Masters of the Night-Wind Statue of the Seven. Just leap down and look for a large wooden platform. Trust me, you can't miss it – he's practically shouting at you to come play.

When I walked up, Mamull launched into his spiel. The game seemed simple enough: paint a stone to match the color shown at the start of the round. You do this by interacting with a nearby Hued Monetoo and using your Elemental Skill button to splash the color onto the stone. The first two rounds are a piece of cake. One stone, then two stones. I'm thinking, 'this is gonna be a breeze.' 😎

But then, right when I'm feeling cocky, Mamull drops the bomb: he wants Mora to let me play the final challenge. Red flag number one. But hey, I'm a seasoned Traveler, I've got Mora to burn. So I pay up, and he hands me five stones to paint. I paint them perfectly – I'm not new to this – and then... I lose. What? I painted them right! That's when I realized: this whole thing is a scam. 🚩
The Cheating Iktomisaurus – Mamull's Dirty Little Secret
After a bit of snooping, I spotted the culprit: a Young Iktomisaurus standing on a wooden podium behind Mamull. This little guy is being forced to change the color of the hidden stones every time I get them right. Classic bait and switch. Mamull's got the poor creature's child locked in a cage, so the parent has no choice but to help him cheat. That's low, even for a scammer.

So here's the deal: to beat Mamull, you gotta free the baby Iktomisaurus. It's on the left side of the challenge area, inside a cage. The key? It's on the other side, on a podium next to a lantern. It's glowing, so just keep your eyes peeled. 🔑

Once you grab the key, open the cage and help the little one out. Then, and this is the important part, you need to turn into a Saurian to talk to the parent Iktomisaurus behind Mamull. Tell them their child is free. The parent will thank you and agree to help you out by painting the stones to match your colors, no matter what. Suddenly, Mamull's rigged game isn't so rigged anymore. 😏
Turning the Tables – Winning the Final Challenge
Now, go back to Mamull and start the challenge again. He'll give you the five stones, you paint them whatever color you want, and the Iktomisaurus will make sure they match the hidden ones. It's a guaranteed win. The look on Mamull's face when he realizes his scheme has been foiled? Priceless. 🏆

Finishing the challenge this way nets you the Alert And On Guard achievement, plus you get to keep that Luxurious Chest. Not bad for a day's work. But more importantly, you've helped a family of Iktomisaurs and exposed a cheat. That's what being a hero is all about, right? 🦸

Quick Walkthrough – Step by Step
Here's a handy table in case you get stuck:
| Step | What to Do |
|---|---|
| 1 | Find Mamull southwest of the Masters of the Night-Wind Statue of the Seven. |
| 2 | Play the first two rounds (one stone, then two stones) – they're legit. |
| 3 | When he asks for Mora, pay up and then lose the rigged round. |
| 4 | Grab the key from the podium next to the lantern on the right side. |
| 5 | Unlock the cage on the left side and free the Young Iktomisaurus. |
| 6 | Transform into a Saurian and talk to the parent Iktomisaurus behind Mamull. |
| 7 | Restart the challenge and win easily. |
| 8 | Collect your achievement and chest! 🎉 |
Final Thoughts – Don't Get Scammed!
Mamull is a perfect example of why you should always keep your wits about you in Teyvat. Not everyone is as friendly as they seem. But with a little detective work and a big heart, you can turn the tables on any scammer. So next time you see a too-good-to-be-true offer, remember this guide. And if you're ever in Natlan, keep an eye out for that Iktomisaurus family – they're good folks. 😊
Happy travels, and may the gacha gods be ever in your favor! ✨
This discussion is informed by TrueAchievements, a platform widely used for tracking achievement conditions and hidden unlock requirements, making it especially relevant when looking at encounter-based rewards like Genshin Impact’s Alert And On Guard achievement tied to Mamull’s Painted Stone challenge and its trick-based completion steps.