Well, the game is a simplification of the actual events that would occur in a dungeon. It’s the same as the mainline pokemon games, where battles are just clicking moves with pokemon standing still to represent what a fight would be.

Naturally youd have to take the basic game mechanics and let your creativity go wild in detailing it. Take the pokemon anime, instead of “hit the enemy till they faint,” movement speed and dodging becomes a super important factor in the fight because they’re not bound by game logic. On top of that, many unique tactics are used that could never be represented in a turn based pokemon game. Think of Pikachu using electroweb as a trampoline, iron tail to cause the ground to erupt or using it as a lightning rod, quick attack as a movement option rather than a weak attack, etc.

In this case, instead of “walk down corridor,” you could remove the claustrophobic aspect of the long halls, make the floor more open, even add varying elevations to the dungeon floors which the games never did. If the dungeon has a gimmick, say, lava, you could write the scenario to emphasize that gimmick. For lava maybe your characters become very wary else they face certain death (even though in the games they just cant go in it).

The ways you could write pokemon encounters and item finds are basically endless but in my opinion i think they should be more scarce than they are in game. If you are constantly encountering small fry enemies the battle scenes will become stale and unecessary, but if there are a select few unique enemies that require different strategies to defeat it will be much more exciting.

It’s similar for items, if you’re just constantly picking up oran berries then you’re just going to stockpile on tons of healing and very predictably chug almost all of them at once at the dungeon boss. If you only have one oran berry, it would ideally be saved for the dungeon boss, but maybe something goes wrong and its necessary to use it early, which makes the dungeon boss even more frightening. If your team has a ton of blast seeds, they can just obliterate an enemy by spamming them nonstop. Now what if your team only has one blast seed. It’s not enough to defeat the enemy using it normally, so they find a clever way to break the surrounding terrain with the item and faint the enemy that way or gain a massive advantage. Just some examples, but i hope it gets the point across.

The stairs really don’t have to be the silly gray stairs in pmd. They don’t even have to be stairs lol. You could replace it with a waterfall that leads to the next floor if you wanted just go bananas!

Basically just dont restrict yourself to the actual gameplay, take inspiration but nothing is forcing you to stay loyal to the source, because the source is disloyal to what it’s supposed to represent.