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