• A rope. You drop in through a hole, and a rope is how you climb back out.
• Something for demon, hero and priestess — they live down there.

The chest is 8 floors under the surface. Going down over it, this is what each floor uses:

1. 1 down: down through a hole.
2. 2 down: down through a hole.
3. 3 down: down through a hole.
4. 4 down: down through a hole.
5. 6 down: down through stairs.
6. 7 down: down through stairs.

• 1 — the way in: a hole, 1 down
• → — the treasure lies this way

• 2 — a hole, 2 down
• → — the treasure lies this way

• 3 — a hole, 3 down
• → — the treasure lies this way

• 4 — a hole, 4 down
• → — the treasure lies this way

• 5 — stairs, 6 down
• → — the treasure lies this way

• 6 — stairs, 7 down
• → — the treasure lies this way

Some floors are not on the list: their way down is further off than the rest, and that stretch you have to find yourself.

• 1 — the chest

One chest, one reward.