The Gargos Add-on for Killer Instinct has 14 achievements worth 150 gamerscore.
Unlock a color for Gargos
Win a versus match as Gargos
Reach 30 Fight Challenges with Gargos
Win 20 ranked matches with Gargos
Earn a supreme Victory in an online match as Gargos
Defeat 10 opponents in one Survival as Gargos
Defeat 6 different characters in online matches as Gargos
Complete 200 matches as Gargos
Win an exhibition match vs a friend as Gargos
Win a survival match as Gargos
Reach 150 Fight Challenges with Gargos
Reach 80 Fight Challenges with Gargos
Win a Ranked Match as Gargos
Break two combos using Eruption in a single match while in Gargos’ Instinct Mode