Assault Ops/Halo: Spartan Strike/Operation B: Steadfast Pursuit

From Halopedia, the Halo wiki

Level Name Objective Reward
B-1: Gamma Halo Assault Op 1 Kill 15 Grunt Minors with melee attacks 100 CR
Assault Op 2 Kill 15 Jackals with grenades 250 CR
Assault Op 3 Kill 5 Elite Minors with a Ghost 500 CR
B-2: Signal Fires Assault Op 1 Destroy 2 Ghosts with grenades 100 CR
Assault Op 2 Kill 8 Jackals with melee attacks 250 CR
Assault Op 3 Kill 25 Elites with a rifle 500 CR
B-3: Lockout Assault Op 1 Kill 5 Grunt Ultras with Plasma grenades 100 CR
Assault Op 2 Kill 15 Jackals with grenades 250 CR
Assault Op 3 Kill 20 Stealth Elites with a Needler 500 CR
B-4: Knockin' on a Forerunner Door Assault Op 1 Destroy 2 Shade Turrets with a Wraith 100 CR
Assault Op 2 Kill 15 Covenant with a Shade Turret 250 CR
Assault Op 3 Kill 75 Grunt Minors with a Wraith 500 CR
B-5: Dormant Assault Op 1 Kill 2 Knights with a Suppressor 100 CR
Assault Op 2 Destroy 4 Focus Turrets with Pulse Grenades 250 CR
Assault Op 3 Kill 200 Crawler Alphas with a Suppressor 500 CR
B-6: Run Through the Jungle Assault Op 1 Kill 20 Crawlers with a Kestrel 100 CR
Assault Op 2 Destroy 15 Focus Turrets with a Kestrel 250 CR
Assault Op 3 Kill 20 Knights with a Kestrel 500 CR