List of Halo 4 commendations/Enemies

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 75 250 Proficient 150 500 Adept 300 750 Expert 450 1000 Distinguished 600 2500 Master 900 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.