How would you survive in a world with extreme dangers (e.g., Game of Thrones battles, The Hunger Games arena)? What skills would you prioritize?

I would prioritize a great amout of Chemistry knowledges, because in that world, the more Chemistry knowledges you have, the more powers you will have. (Like you will have more ways to summon your Summoners)

Like you will have more ways to summon your summoned creatures