Part 2 - Elevator
The no longer icy area is east of the ice junction. "You come to an area that is no longer icy. Tall mountains prevent you from moving any direction but back west."
A person can be elevator-knowledgeable.
A strange piece of ground is a kind of thing. "[if the player is elevator-knowledgeable]There is an elevator here.[else]You see a piece of ground that looks a bit strange." The description of a strange piece of ground is "It is orange. On closer inspection, it looks like it's an elevator, although it doesn't have any walls or obvious mechanism of movement." Understand "elevator" as a strange piece of ground. After examining a strange piece of ground, now the player is elevator-knowledgeable. A strange piece of ground is usually fixed in place. In the no longer icy area is a strange piece of ground.
Using the elevator is an action applying to nothing. Understand "use the/-- elevator" as using the elevator. Instead of taking a strange piece of ground, try using the elevator. Instead of entering a strange piece of ground, try using the elevator. Understand "step on [thing]" as entering.
Instead of using the elevator, say "I see no elevator here". Instead of using the elevator when the player is in the no longer icy area, try going down. Instead of using the elevator when the player is in the ominous cave, try going up.
Before going down when the player is in the no longer icy area the first time:
say "As you step onto the strange piece of ground, [if the player is not elevator-knowledgeable]to your surprise it turns out to be an elevator, and [end if]it starts to descend.";
now the player is elevator-knowledgeable.
The ominous cave is below the no longer icy area. "You come to a small cave. Eerie music plays here. There are no exits other than the elevator you used to get here." Here is a strange piece of ground.
The boots are in the cave. "Inside the cave, you see a pair of boots, which seem to have some sort of sparkly effect around them." The description of the boots is "They are yellow, and as you look closer, you see a tag that says 'longjump'." The boots are wearable. After taking the boots, say "As you take the boots, you remember the words of Vasu the jeweler: 'Rings do nothing unless worn!' These aren't rings, but whatever...". After wearing the boots the first time, say "You put on the boots. You seem to walk the same as you always have, but feel like you might be able to jump better." Understand "longjump boots" as the boots.
Instead of jumping east when the player is in the pit area and the player is wearing the boots:
say "You jump over the pit and bonk into the mountain. Fortunately, you're not harmed.";
now the player is in the ledge.
Instead of jumping west when the player is in the ledge and the player is wearing the boots:
say "You jump farther than you expect, and land back at the start.";
now the player is in the grassy starting area.
Instead of jumping north when the player is in the ledge and the player is wearing the boots:
say "You use your new power-up to jump all the way to the second ledge. NONLINEARITY!!";
now the player is in the second ledge.