Killer Instinct
464 Achievements
4,935
354-432h
Battle-worn Arbiter
You have won 20 ranked matches with Arbiter!
10
0.02%
How to unlock the Battle-worn Arbiter achievement in Killer Instinct - Definitive Guide
Dirty, Lavindathar, and, Metabolic, XBA
You will unlock this upon winning 20 Ranked Matches with Arbiter. You can do this legitimately by searching for Ranked Matches and winning, boosting it with a friend by searching for a Ranked Match at the same time or 'double-boxing' with two Xbox Ones and a spare account. Keep in mind that you will occasionally get matched up with other players but it should be less likely now that the game's player pool has decreased significantly. You will unlock "Competitive Arbiter" after winning your first Ranked Match.
You can check how many Ranked wins you have under Fight Archives or Leaderboards.
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- Fire Weapon. Fired by the Type-51 Carbine, which holds 18 rounds and can fire three at a time. 
- Throw Grenade. Throws a plasma grenade that explodes after 3 seconds. 
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- Mercy's Demise. Lunge forward with an energy sword slash. 
/ - Truth Seeker. An overhead strike with an energy sword. 
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- Prophet's Bane. The Arbiter turns invisible to strike from behind with an energy sword.