(from the information you have given me and my assumptions here is my answer.)
it is kind of like in nature, if you dont kill you will be killed. by the end of the story they both learn that you have to make the first move of their life could be on the line. in the most dangerous game the protagonist is trying to kill the antagonist but dosent want to. in the sniper the protagonist wants to kill the prey.
(i hope this helps :) if itdoes just make sure to add correct punctuation and capitalize the first words.)