I have planned in my quest different "trials" - there are three different types:
-Trial of Power: More or less an enemy gauntlet, you have to defeat a large number of difficult enemies without dying - make take away the ability to use certain items, not sure about this yet.
-Trial of Wisdom: A puzzle trial - could be a series of push blocks, a series of logic puzzles, or guess-and-check puzzles (hit triggers in certain order - you'll eventually find the right solution through trial-and-error)
-Trial of Courage: This is the least obvious and the one in question. I'm not sure what I should do for this type of trial. Maybe a combination of enemy gauntlet and platforming/navigation through spikes/damage combos while having only a quarter heart? (Do you have the COURAGE to master this trial with very little health?!)
Think of these as mini-dungeons or "shrines" sort of like in BotW. There will be about 10 different ones of each kind (so 30 overall). I'm not sure what the rewards for these are yet either.