To enter one of the doors, the participating members must meet the eight thousand essence requirement by scanning their bands at the glowing white terminal in the center of the hall. Once their bands light up green, they’re free to choose any door to enter. The Mysterious Doors challenge isn't a maze but may involve puzzles depending on the door chosen. The objective is to pass through a door, defeat the guardian within, and continue until they find the door that conceals a special guardian.

“Hundreds of doors? Seriously?” Wyn whines.

“You’ll get it once we go through one, Mister Wyn,” Lisa replies.

Since choosing a door is luck-based, Wyn decides to let a different member pick each time. For the first one, Lisa picks a purple door. As soon as it's opened, a blinding light floods the space. When Wyn finally opens his eyes, he realizes they've entered a two-dimensional world.

“NOOO!” Mira exclaims.

“What? What’s wrong?” Wyn asks.

“My boobs! They’re...well, I don’t even know how to describe them now,”

“...Where are you exactly? And, uh, who’s who?” Wyn asks.

The team quickly realizes how disorienting it is in the two-dimensional world. With everyone reduced to mere lines, it becomes nearly impossible to tell who is who, as they can only see the thin profiles of the others standing in front.

“Make sure you protect your brain,” Lisa advises.

Suddenly, they’re forced to move as the back line is gradually pushed toward the front. Wyn scrambles to organize the team, making sure no one stands directly in another’s line of fire. Given the limited space, he can only fit five members in a vertical line. That’s when Lisa suggests a new formation: placing four members in the front and three in the back, staggered to fill the gaps between those in the front line. With Wyn’s command, the team floats to their designated spots. In the front line, from top to bottom, are Mira, Lisa, Wyn, and Yu. The second line, meant more for support, consists of James, Anish, and Christine. The front line finds themselves having to keep moving forward to stay ahead due to the automatic push.

“Waka waka waka waka,” Yu says, imitating a sound from a classic game.

Since they can see only lines, the enemies are marked by glowing red lights. Lisa is having a blast firing her gun non-stop.

“What are the enemies even?” James asks.

“Nobody knows, Mister James. Just kill them all.”

The kills yield no essence, that is until the back is no longer being pushed. An alarm sounds and a large papaship creature appears, teleporting in.

A papaship is similar to a UMF, except for the beard around the mouth on the bottom, the larger size, and the ability to spawn countless UMFs. Despite its occasional attempts to hover above the team and consume them, Lisa's charged laser shots from her gun make this battle trivial. After its defeat, they’re back to normal and a pool of essence appears along with one hundred or so doors.

“Damn, sooo close!” James says, referring to his essence count.

Christine is up next to choose a door. The reflective sky-colored door leads the team to a ledge on the other side. Below, they see pandalum creatures – floating pendulum balls shaped like pada faces. In the center of the floor, above the pandalums, hangs a large chandelier. On it, a stationary creature looms.

“What now?” Yu asks.

“My guess is we step on the pandas below to reach the chandelier,” Wyn says.

Lisa warns Wyn about stepping on the pandalums, as they’ll spin upon contact and can crush anyone who loses their balance. Anish responds with the biggest smile. Like with the previous door, it seems there's no penalty for “cheating” the challenge. However, the stationary creature on the chandelier concerns Wyn, prompting him to put Anish’s plan on pause.

“Anish, drop me off on the chandelure – uh, I mean, chandelier. I want to see what that thing does first,” Wyn suggests.

Compliant, Anish carefully places Wyn on the chandelier. Suddenly, the creature moves, swinging the chandelier as it does.

“Careful, Oppa! And guys, I wanna sing for some reason,” Mira says.

The creature resembles a crocodile on roller skates, its balance and speed astonishing as it attempts to snap at Wyn with its powerful jaws while rocking the chandelier as much as possible. The moment Anish floats Wyn off the chandelier, the crocodile halts.

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“Anish! Take me! I’m gonna swing from the chandelier!” Mira exclaims.

Back on the ledge, Wyn lets Lisa fire a round of lasers at the creature. It gracefully dodges all the beams, but while it's airborne, homing electrical shocks paralyze it. Wyn follows up with a descending cyclone, slamming the creature onto the chandelier. The force sends it crashing down into the pandalum pit, where it's crushed, releasing essence into the pit below. Despite its appearance, a pandalum can also bounce vertically depending on the force that disturbs it. Fearing they’ll get crushed, the souls forgo the essence and let Anish choose the next door.

Entering the sparkly pink door, the team finds themselves in an arena. On one side stands a battle bot, while on the other is a sunflower with spikes encircling its disk and a tank wheel for a single foot. Behind the robot, there’s a control terminal.

“It’s…it’s a turn-based battle system!” Wyn says.

Selecting “Attack” and “Normal Attack” initiates the robot to punch the creature with its mechanical arm. The sunflower reacts by firing spiky seeds from the disk, causing twenty percent of the robot’s health.

“What happens if it dies?” Wyn asks.

“I don’t know, Mister Wyn. This is my first time seeing it too!” Lisa replies.

After selecting “Flamethrower” from the “Special Attack” menu, the robot unleashes flames from its hands. The sunflower reacts, but without a health bar, Wyn can’t gauge the exact damage dealt. The creature then advances, chomping down on the robot’s face and engulfing it within its disk, dealing an additional fifteen percent damage. It dawns on Wyn that there are no strict rules to follow – in fact, there aren’t any rules at all. Rather than engage the creature directly, he decides to let the robot do the heavy lifting, with support from the red elementalists, Mira and Lisa.

Positioned on either side of the machine, Mira and Lisa fire their projectiles while the robot unleashes another flamethrower. Whenever the creature attacks the robot, the girls continue their barrage. For the final blow, Wyn selects the “Self Destruct” option, causing the robot to charge into the enemy and explode. The team reaps the rewards afterward.

“Guys! I’m over ten thousand now! We need to celebrate after, eh!” James says, receiving high-fives from his teammates, including Wyn.

The door options are dwindling with each successful progression, leaving about fifty. Yu selects a burning wooden door, leading the team into a blazing palace. Inside, mirrors cover every wall and path, making navigation to the end of the palace a tricky endeavor. To top off, the light occasionally disappears.

“It’s so dark!” Lisa remarks.

“Like, who’s this? Is this Yu?” Christine asks, feeling the person in front of her.

“No, this is Patrick,” Yu replies.

“Oh, I’m, like, sorry…WAIT A MINUTE!”

Mira takes the lead, attempting to use the metal egg to test the reflections and find the correct path. Unfortunately, the intense fire creates multiple, confusing reflections, causing her to repeatedly bump into the mirrors. Traversing through the mirrors for five floors is no easy task. Once they reach the roof, which is barricaded by mirror walls but has no ceiling, Anish celebrates by kissing the floor.

Waiting for them is a creature, a fortress-shaped mirror with holes around it. Below is another hole hosting a sturdy spring. Without moving, it fires laser beams from the holes. Despite their attempt to block the beams, some of the members are hit from the ricocheted beams. The attacks leave nasty burn marks on Yu’s thigh, Mira’s breast, Christine’s shoulder, and James’ abdomen.

“Those would’ve pierced us if we weren’t as strong,” Lisa says.

The fortress-shaped mirror springs into the air, falls on its side, and begins rolling toward the team. Anish, quick on his feet, lifts everyone up just in time, but the fortress slams into the whole team as it bounces off the wall. With sheer luck, the creature rolls over the souls while airborne, landing and rolling back to its original side. The team, however, is left sprawled on the floor, slow to get up. Another barrage of lasers follows. This time, Wyn and James surround the team with pillars, successfully shielding them from the onslaught.

The fortress rolls toward the team once more. Wyn launches a fire-fused cyclone to stall the creature. Yu, Christine, and James, aided by Anish, lift the fortress and roll it back slowly. Without enough momentum, the fortress fails to bounce off the wall.

“Ha! How are you even gonna get up!” Yu taunts.

While still down, the fortress fires more lasers. Though Wyn and James shield the team with pillars, a beam manages to land on Lisa’s stomach.

“I’m fine!” Lisa reassures before anyone can ask her.

The continuous onslaught from the fortress keeps the team grounded, unable to move from their current position. Wyn fuses with Mira, summoning a fiery cyclone that carries Mira’s whip down toward the beast. However, a laser strikes the whip, causing it to explode midair.

“Think of the carmit. If it’s a mirror, then we can break it!” Wyn says.

In an attempt to reduce its movement after, Anish hooks one side of his weapon to the creature and the other to the ground, using wind gusts to secure it in place while carefully avoiding the laser holes. A fully-charged cyclone, fused with rock, water, snow, and ice, crashes down to block the holes. Despite their efforts, the attack doesn’t go as planned; a subsequent barrage of lasers destroys the blockades. However, the impact does crack the fortress.

“Fuck it,” Wyn says.

With that, Wyn unleashes another fully-charged cyclone, carrying everyone’s weapons except Mira’s and Anish’s. Some weapons embed themselves into cracks, while others either bounce off or are shot down by lasers. Wyn then continues sending cyclones, with Mira’s weapon leading the charge, using the resulting explosions to great effect. As Mira resummons her weapon for another strike, the whip glows. The round metal egg now sports a spiky tip of equal size, which lodges into a crack on the enemy. The tip ignites before exploding, chipping away enough of the fortress to cause it to dissolve into essence. Mira’s whip has evolved.