Answers to you're questions
U can't kill the three electric balls in the temple of courage.
The sacred crest is a hourglass start drawing from the north west corner, then go to the northeast corner, then draw to the southwest corner, then the southeast corner and finally back to the northwest corner the result should a hourglass(sry if you're confused).
Ask where to get the grappling hook and then what you do is you attach to 2 thing and run into the rope hold and then let go and you'll fly.
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