Enemies commendations are awarded in Spartan Ops only
Backstab
Assassinate Covenant and Forerunner enemies.
Tier
|
Required #
|
Rewarded XP
|
Novice
|
10
|
250
|
Proficient
|
25
|
500
|
Adept
|
50
|
750
|
Expert
|
100
|
1000
|
Master
|
100
|
2500
|
Covenant Enemy
Grunt Slayer
Kill Grunt Infantry
Tier
|
Required #
|
Rewarded XP
|
Novice
|
125
|
250
|
Proficient
|
250
|
500
|
Adept
|
500
|
750
|
Expert
|
750
|
1000
|
Distinguished
|
1000
|
2500
|
Master
|
2500
|
5000
|
Grunt Imperial Slayer
Kill Grunt Imperials and Space Grunts
Tier
|
Required #
|
Rewarded XP
|
Novice
|
75
|
250
|
Proficient
|
150
|
500
|
Adept
|
300
|
750
|
Expert
|
450
|
1000
|
Distinguished
|
600
|
2500
|
Master
|
900
|
5000
|
Grunt Ultra Slayer
Kill Grunt Ultras
Tier
|
Required #
|
Rewarded XP
|
Novice
|
25
|
250
|
Proficient
|
50
|
500
|
Adept
|
75
|
750
|
Expert
|
175
|
1000
|
Distinguished
|
250
|
2500
|
Master
|
350
|
5000
|
Jackal Slayer
Kill Jackal Infantry
Tier
|
Required #
|
Rewarded XP
|
Novice
|
75
|
250
|
Proficient
|
150
|
500
|
Adept
|
300
|
750
|
Expert
|
450
|
1000
|
Distinguished
|
600
|
2500
|
Master
|
900
|
5000
|
Jackal Major Slayer
Kill Jackal Majors
Tier
|
Required #
|
Rewarded XP
|
Novice
|
25
|
250
|
Proficient
|
50
|
500
|
Adept
|
75
|
750
|
Expert
|
125
|
1000
|
Distinguished
|
250
|
2500
|
Master
|
500
|
5000
|
Jackal Ranger Slayer
Kill Jackal Rangers
Tier
|
Required #
|
Rewarded XP
|
Novice
|
10
|
250
|
Proficient
|
25
|
500
|
Adept
|
50
|
750
|
Expert
|
75
|
1000
|
Distinguished
|
150
|
2500
|
Master
|
300
|
5000
|
Elite Slayer
Kill Elite Infantry
Tier
|
Required #
|
Rewarded XP
|
Novice
|
25
|
250
|
Proficient
|
50
|
500
|
Adept
|
75
|
750
|
Expert
|
125
|
1000
|
Distinguished
|
250
|
2500
|
Master
|
500
|
5000
|
Elite Zealot Slayer
Kill Elite Zealots and Rangers
Tier
|
Required #
|
Rewarded XP
|
Novice
|
10
|
250
|
Proficient
|
25
|
500
|
Adept
|
50
|
750
|
Expert
|
75
|
1000
|
Distinguished
|
150
|
2500
|
Master
|
300
|
5000
|
Elite Officer Slayer
Kill Elite Officers
Tier
|
Required #
|
Rewarded XP
|
Novice
|
5
|
250
|
Proficient
|
15
|
500
|
Adept
|
30
|
750
|
Expert
|
60
|
1000
|
Distinguished
|
90
|
2500
|
Master
|
180
|
5000
|
Elite General Slayer
Kill Elite Generals
Tier
|
Required #
|
Rewarded XP
|
Novice
|
3
|
250
|
Proficient
|
7
|
500
|
Adept
|
21
|
750
|
Expert
|
42
|
1000
|
Distinguished
|
63
|
2500
|
Master
|
84
|
5000
|
Hunter Slayer
Kill Hunters
Tier
|
Required #
|
Rewarded XP
|
Novice
|
5
|
250
|
Proficient
|
10
|
500
|
Adept
|
25
|
750
|
Expert
|
50
|
1000
|
Distinguished
|
100
|
2500
|
Master
|
250
|
5000
|
Covenant Destroyer
Complete all of the following commendations: Elite General Slayer, Elite Officer Slayer, Elite Zealot Slayer, Grunt Ultra Slayer, Grunt Imperial Slayer, Hunter Slayer, Jackal Ranger Slayer, Jackal Major Slayer, completing this commendation will unlock the Orbital "Aeon" (AEON) armor set, and the "Covenant" emblem
|
Forerunner Enemy
Crawler Slayer
Kill Crawler Infantry
Tier
|
Required #
|
Rewarded XP
|
Novice
|
125
|
250
|
Proficient
|
250
|
500
|
Adept
|
500
|
750
|
Expert
|
750
|
1000
|
Distinguished
|
1000
|
2500
|
Master
|
2500
|
5000
|
Crawler Sniper Slayer
Kill Crawler Snipers
Tier
|
Required #
|
Rewarded XP
|
Novice
|
75
|
250
|
Proficient
|
150
|
500
|
Adept
|
300
|
750
|
Expert
|
450
|
1000
|
Distinguished
|
600
|
2500
|
Master
|
900
|
5000
|
Crawler Prime Slayer
Kill Crawler Primes
Tier
|
Required #
|
Rewarded XP
|
Novice
|
25
|
250
|
Proficient
|
50
|
500
|
Adept
|
75
|
750
|
Expert
|
125
|
1000
|
Distinguished
|
250
|
2500
|
Master
|
500
|
5000
|
Knight Slayer
Kill Knights
Tier
|
Required #
|
Rewarded XP
|
Novice
|
25
|
250
|
Proficient
|
50
|
500
|
Adept
|
75
|
750
|
Expert
|
125
|
1000
|
Distinguished
|
250
|
2500
|
Master
|
500
|
5000
|
Knight Battlewagon Slayer
Kill Knight Battlewagons and Rangers
Tier
|
Required #
|
Rewarded XP
|
Novice
|
10
|
250
|
Proficient
|
25
|
500
|
Adept
|
50
|
750
|
Expert
|
75
|
1000
|
Distinguished
|
150
|
2500
|
Master
|
300
|
5000
|
Knight Commander Slayer
Kill Knight Commanders
Tier
|
Required #
|
Rewarded XP
|
Novice
|
5
|
250
|
Proficient
|
15
|
500
|
Adept
|
30
|
750
|
Expert
|
60
|
1000
|
Distinguished
|
90
|
2500
|
Master
|
180
|
5000
|
Watcher Slayer
Kill Watchers
Tier
|
Required #
|
Rewarded XP
|
Novice
|
125
|
250
|
Proficient
|
250
|
500
|
Adept
|
500
|
750
|
Expert
|
750
|
1000
|
Distinguished
|
1000
|
2500
|
Master
|
2500
|
5000
|
Forerunner Destroyer
Complete all of the following commendations: Crawler Slayer, Crawler Prime Slayer, Crawler Sniper Slayer, Knight Commander Slayer, Knight Slayer, Knight Battlewagon Slayer, Watcher Slayer, completing this commendation will unlock the Vanguard armor set, and the "Promethean" emblem
|