Killer

Challenges in the Killer tier.

Claymore Shot
Unlocked at level 30 XP reward: 250

Kill five enemies with Claymores.

Assault Expert I, II and III
Unlocked at level 30 XP reward: 50, 100, 250

Kill 5, 25 and 35 enemies with a headshot while using an assault rifle.

SMG Expert I, II and III
Unlocked at level 30 XP reward: 50, 100, 250

Kill 5, 25 and 35 enemies with a headshot while using a SMG.

LMG Expert I, II and III
Unlocked at level 30 XP reward: 50, 100, 250

Kill 5, 25 and 35 enemies with a headshot while using a LMG.

Last Stand Veteran I, II and III
Unlocked at level 33 XP reward: 50, 100, 250

Kill 1, 5 and 15 enemies while in Last Stand.

Master Chef I, II and III
Unlocked at level 33 XP reward: 50, 100, 250

Kill 5, 10 and 20 enemies with a cooked grenade.

Airstrike Veteran I, II and III
Unlocked at level 33 XP reward: 50, 100, 250

Kill 5, 15 and 30 enemies with Airstrikes.

Chopper Veteran I, II and III
Unlocked at level 33 XP reward: 50, 100, 250

Kill 5, 15 and 30 enemies with a Helicopter.

Stun Veteran I, II and III
Unlocked at level 36 XP reward: 50, 100, 250

Kill 5, 10 and 25 enemies that are stunned by a Stun grenade.

Multi RPG
Unlocked at level 36 XP reward: 250

Kill two enemies with one rocket from a RPG-7.

Martyrdom Veteran I, II and III
Unlocked at level 36 XP reward: 50, 100, 250

Kill 1, 5 and 15 enemies with grenades dropped by Martyrdom.

Clay MOre
Unlocked at level 36 XP reward: 250

Kill two enemies with one Claymore.

Stealth I, II and III
Unlocked at level 39 XP reward: 50, 100, 250

Kill 10, 25 and 50 enemies with a weapon equipped with a supressed weapon.

Invisible I, II and III
Unlocked at level 39 XP reward: 50, 100, 250

Kill 10, 25 and 50 enemies with a Sniper rifle while prone.

Counter-Claymore I, II and III
Unlocked at level 39 XP reward: 50, 100, 250

Kill 1, 5 and 10 enemies by shooting a claymore.

Counter-C4 I, II and III
Unlocked at level 39 XP reward: 50, 100, 250

Kill 1, 5 and 10 enemies by shooting C4.