User blog comment:NOBODY/Hiding the Video Module and Photos Module: The Email/@comment-3060206-20130529003714/@comment-5557081-20130529005900

I think anything that has to do with a game's "uncoverable" storyline is a spoiler. By that, I mean any part of game's story that can only be uncovered by completing the game (the ending) or completing a certain amount of levels. Anything that involves the gameplay, however, like the enemy example you mentioned, is not really a spoiler, as it doesn't really uncover part of the game's story. As for a boss, I think that depends on how much of the game's storyline the boss reveals.