N64brew: https://discord.gg/XYyzwvv

AI.C: https://hastebin.com/curefiguzo.m

Pretext

So, the context is, this puzzle will reveal the password to a compressed archive. It has been stated that: "All passphrases are lowercase alphanumerics without spaces, punctuation, or symbols." (Note: Given that the previous two passwords were all aplha only, we believe this would be the case with the last puzzle)

The puzzle consists of 3 apparent levels on encryption. The first two puzzles have been solved, and the answers will be relayed below. We are simply stuck on the last puzzle. Any help/advice would be greatly appreciated.

Level 1 (SOLVED)

On a grey autumn afternoon you find yourself meandering through a desolate wood. As you crest a hill through dense underbrush, you trip over a sharp stone and fall to your knees. You turn to look at it.

Its ragged, white surface is unlike that of any rock you've seen. You brush away the dirt and moss around it, revealing a tapered protrusion with a base somewhere deep below ground.

You wrap both hands around it and pull, but it refuses to budge. Then, you notice an inscription scratched into the surface. The weathered scrawl reads:

OPEN ME AT YOUR OWN PERIL

INSIDE LIE ONLY ILLS AND EVIL

Answer: pandorasbox

Level 2 (SOLVED)

Curiosity wins out against your better judgment, and you set both heels against the earth and heave. With a crunch, the stone breaks free and slides out of the ground, sending you stumbling backwards.

You now realize that what you thought was a stone is really a curved section of bone thicker than your arm and more than a yard in length. It appears to be the rib of some massive animal, perhaps a whale or an elephant.

As you ply at the ground with your shoe, the loose dirt readily gives way. You begin to scrape at it with the bone, slowly at first, and then faster with growing anticipation. Could more secrets be buried beneath?

The sun begins to set. As the light fades and the cool evening air lashes at your skin, you strike something hard, the jolt reverberating through your body. Scraping aside more dirt and pebbles, you see a rusted steel box, its latch and hinges eaten away by the elements. You remove the lid and find a moldy leather bound journal inside. Written in faded ink on the first page, barely visible in the glimmer of moonlight, are the words:

SOME GIFTS ARE CHAOS IN DISGUISE

THEY HARBOR AGENTS OF DEMISE

Answer: trojanhorse

Level 3

You return to the spot at daybreak with a shovel and a pickaxe. Hacking away steadily at the soil, you find fragments of bone, jagged incisors bigger than your hand, and signs that a human encampment once stood on the hillcrest: oil lamps, spools of rotted twine, and tattered rags that had once been clothing.

Your pickaxe hits something solid below ground with a deep thud. Sweating and panting, you shovel away pound after pound of dirt until the object is revealed: a broad stone slab, like the lid of a sarcophagus. Carved into it are ornate depictions of monsters with frightful faces and toothy snarls.

Placing your ear against the slab, you hear what sounds like faint whispers echoing underneath. They're chanting a phrase:

THE ANSWER'S WRITTEN ON THE WALL

BENEATH THIS CENTRAL TRANSIT HALL

Answer: ???