One shot=One kill

MY RANK HISTORY:
➜ Silver 1 : x
➜ Silver 2 : x
➜ Silver 3 : x
➜ Silver 4 : x
➜ Silver Elite : x
➜ Silver Elite Master : x
➜ Gold Nova 1 : x
➜ Gold Nova 2 : x
➜ Gold Nova 3 : x
➜ Gold Nova Master : x
➜ Master Guardian 1 : x
➜ Master Guardian 2 : x
➜ Master Guardian Elite :x
➜ Distinguished Master Guardian:x
➜ Legendary Eagle :✔ (My first rank)
➜ Legendary Eagle Master :✔
➜ Supreme Master First Class : ✔
➜ The Global Elite :✔ (My curent rank)