The phrase "to make the kill" means to successfully kill or defeat someone or something.
Sentences with «to make the kill»
If you are savvy enough to buy, sell, or trade at the right moment, you could really make a killing on the forex markets. (monsterpiggybank.com)
Alternatively, if you can pick a good website theme and customize it, you can still make a killing by just tweaking themes for clients. (inc.com)
Each of these will make the killing of enemy hordes faster and easier, and each has a unique ability which is generally used to solve simple puzzles and overcome obstacles. (archive.videogamesdaily.com)