The Spinal Add-on for Killer Instinct has 14 achievements worth 150 gamerscore.
Win an exhibition match vs a friend as Spinal
Reach 30 Fight Challenges with Spinal
Win 20 ranked matches with Spinal
Unlock a color for Spinal
Earn a supreme Victory in an online match as Spinal
Defeat 10 opponents in one Survival as Spinal
Defeat 6 different characters in online matches as Spinal
Complete 200 matches as Spinal
Win a versus match as Spinal
Win a survival match as Spinal
Reach 150 Fight Challenges with Spinal
Reach 80 Fight Challenges with Spinal
Win a Ranked Match as Spinal
Curse an opponent with Spinal's Searing Skull while in Instinct Mode