Commendations:

Any Spree - Earn any type of spree.
Tier	Required #	Rewarded cR
Iron	5		250
Bronze	50		425
Silver	250		1,200
Gold	1,000		2,400
Onyx	4,000		2,400
MAX	10,000		0

Assistant - Earn an assist.
Tier	Required #	Rewarded cR
Iron	50		150
Bronze	250		425
Silver	1,000		1,200
Gold	4,000		2,400
Onyx	8,000		2,400
MAX	20,000		0

Close Quarters - Kill an enemy in close quarters combat (Melee, Shotgun).
Tier	Required #	Rewarded cR
Iron	50		150
Bronze	125		375
Silver	400		1,200
Gold	1,600		2,400
Onyx	4,000		2,400
MAX	8,000		0

Crack Shot - Kill an enemy with a precision weapon (Sniper Rifle).
Tier	Required #	Rewarded cR
Iron	100		300
Bronze	500		1,000
Silver	4,000		2,000
Gold	10,000		3,000
Onyx	20,000		3,000
MAX	32,000		0

Grenadier - Kill an enemy with a Frag grenade or Plasma grenade.
Tier	Required #	Rewarded cR
Iron	25		100
Bronze	125		200
Silver	500		500
Gold	4,000		750
Onyx	8,000		750
MAX	14,000		0

Heavy Weapon - Kill an enemy with a heavy weapon (Fuel Rod Gun, Rocket Launcher).
Tier	Required #	Rewarded cR
Iron	25		100
Bronze	150		200
Silver	750		500
Gold	3,000		750
Onyx	7,000		750
MAX	14,000		0

Jack of All Trades - Perform an incredible feat (Extermination, Kill from the Grave, Killjoy, EMP Blast, Revenge, First Strike, Close Call, Pull, Showstopper, Rejection, Avenger, Firebird).
Tier	Required #	Rewarded cR
Iron	50		150
Bronze	125		375
Silver	400		1,000
Gold	1,600		1,600
Onyx	4,800		1,600
MAX	9,600		0

Mobile Asset - Kill an enemy with a vehicle.
Tier	Required #	Rewarded cR
Iron	25		100
Bronze	125		200
Silver	500		500
Gold	4,000		750
Onyx	8,000		750
MAX	14,000		0

Multikill - Earn any multikill.
Tier	Required #	Rewarded cR
Iron	10		250
Bronze	125		450
Silver	500		875
Gold	2,500		1,400
Onyx	5,000		1,400
MAX	15,000		0

Rear Admiral - Kill an enemy with an assassination.
Tier	Required #	Rewarded cR
Iron	5		300
Bronze	25		500
Silver	100		750
Gold	1,000		1,000
Onyx	4,000		1,000
MAX	8,000		0

Sidearm - Kill an enemy with a pistol (Pistol, Plasma Pistol).
Tier	Required #	Rewarded cR
Iron	50		100
Bronze	250		200
Silver	1,000		500
Gold	4,000		750
Onyx	8,000		750
MAX	10,000		0

Trigger Man - Kill an enemy with an automatic weapon (Assault Rifle, Needler, Plasma Rifle).
Tier	Required #	Rewarded cR
Iron	100		300
Bronze	500		1,000
Silver	4,000		2,000
Gold	10,000		3,000
Onyx	20,000		3,000
MAX	32,000		0