I don't think I've ever seen the video games cited like that, especially when it contradicts the books (seriously, if the Four Points spell had a non-north-pointing use, why didn't Harry use it in the maze, where it would have been rather more useful than knowing north.)
As for the mindscapes, I agree that canon says nothing, but at this point it is so common in fanfics that it is somewhat unusual not to see it.
What I'd suggest is having Dumbledore be surprised that the mindscape style defense is being used, with the reasoning that for Wizards, it became obsolete with the advent of actual magical Occlumency, as it (the mindscape) just slows the Legilimencer down, without being able to stop him (With there being specific Legilimentic spells for mindscape navigation, that have also fallen into obscurity, but that Dumbledore knows, because Dumbledore). And battlefield Legilimency seems to skim active thoughts, not dig into long term memory, so the mindscape wouldn't be that useful there either.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.
As for the mindscapes, I agree that canon says nothing, but at this point it is so common in fanfics that it is somewhat unusual not to see it.
What I'd suggest is having Dumbledore be surprised that the mindscape style defense is being used, with the reasoning that for Wizards, it became obsolete with the advent of actual magical Occlumency, as it (the mindscape) just slows the Legilimencer down, without being able to stop him (With there being specific Legilimentic spells for mindscape navigation, that have also fallen into obscurity, but that Dumbledore knows, because Dumbledore). And battlefield Legilimency seems to skim active thoughts, not dig into long term memory, so the mindscape wouldn't be that useful there either.
-----
Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.