It took me 111 hours on Zenyatta before I was able to get this achievement . It takes a lot of patience , luck but most of all good teammates . I got mine while my teammates were destroying the opposing team in Li Jian Tower , Garden . I didn ' t even saw the first enemy I discorded because that person died almost instantly . Then I saw a Reaper and Zarya with low health running away , discorded the Zarya and killed her . Then in the distance I saw a D . Va ejecting , discorded her and my teammates made short work of her . Then discorded a Genji at the bridge and I thought he got away but our Mei and Winston chased him and then I got the achievement . Lots of luck , so freaking thankful I got teammates that knew how to focus fire in that game . So don ' t give up . It will be all worth it once you get it .