Anticipatory sightings

Related:
* Foreshadowing
* Anticipatory stockpiles

Commonly short cut-scenes where the player sees the future opponent (new opponent type) scuttling about, possibly several times before actual confrontation. Often the new opponent is partially obscured, only hinting at what they are capable of.

Most dialog shouldn't be considered, not when they clearly point out what's there. Repeated warnings and/or descriptions of things you encounter only much later should be acceptable.

Sightings in normal gameplay should not normally be counted. But if the player has no way of engaging the opponent, then they may be added, especially when the scene where this occurs is mostly done to flaunt them at the player.