It looks like the giant is needed for two mutually-exclusive purposes.
1)
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×How can one clear the upper-left area? Blowing up both bombs at the same moment.
This requires something to be on the pressure plate in the corner: a piece of the destroyed rock giant which must be killed in the corner.
2)
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×To open the plate with the conquer tokens, the giant must be killed on the pressure plate with the arrows. Nothing else can be led there.
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34th Skywatcher
Best to PM me, since I might miss your message on CaravelNet chat.
