Its not possible to boost this achievement and I'm terrible at Overwatch, but I still managed to get this achievement. Figured I might as well add what I did to get it.
Requirements (if it wasn't clear): become the bounty target by (duh) killing the current bounty target (or get 1st kill of the game) and get 3 kills w/o dying.
If you're the sort of bad at Overwatch (like I am) where you hate the game, never play it, and its because you'll notice a D-Va player dominating this mode and you get destroyed almost instantly when you choose to play as D-Va...
My recommendation is to pick Reaper. If you can manage to become the bounty target as him a few times in a single match, stick with him.
Tips:- Most of the maps that cycle for Bounty Hunter are small and feature tiny cramped spaces (Eichenwald for example)
- Reaper is very lethal at short range
- Obviously stick to the tiny cramped spaces whenever possible
- If you're in danger or about to die,
- once you become bounty target, everyone will know where you are
- once you become bounty target, you get 100% health and overcharge
if you're -VERY LUCKY- you can get all 3 kills with 1 Death Blossom
realistically though:
I'd frequently get 2 kills overcharge or no, dying before getting the 3rd. I still managed to get the achievement within 1 hour of starting the update by being persistent.
And I am -not- good at Overwatch