Halo: Spartan Assault

Recruit

Common61.1%

Earn a star of any type in an operation mission

Escort Service

Uncommon35.8%

Keep all Wolverines intact in Operation A, Mission 3

Overrun

Uncommon24.4%

Complete Operation A

Prodigy

Uncommon23.5%

Earn your first Gold star in an operation mission

Switched On

Uncommon12.6%

Complete Operation B

Skull Combo

Uncommon10.8%

Complete any campaign mission with the maximum number of Skulls active

Switched Off

Rare8.9%

Complete Operation C

Nowhere to Hide

Rare6.9%

Finish the mission without any Jackal regenerating its shield in Operation B, Mission 3

Evacuated

Rare5.9%

Complete Operation D

Terminated

Very rare4.2%

Complete Operation E

Archeology

Very rare3.5%

Complete Operation F

Flooded

Very rare3.2%

Complete all co-op missions

Silvertip

Very rare3.1%

Destroy all Mega Turrets with the Grizzly tank in Operation F, Mission 2

Immune

Very rare2.6%

Finish a co-op mission without becoming infected

Weapon of Choice

Very rare2.5%

Score a kill with every handheld weapon in the campaign

Powered by MJOLNIR

Very rare1.5%

Use every ability in the campaign at least once

Earn all Gold stars in Operation F

Brute Force

Very rare1.4%

Finish the objectives using only the Brute Shot, melee and grenades in Operation D, Mission 1

Never Knew What Hit Them

Very rare1.2%

Kill a convoy target with every stationary gun in Operation C, Mission 3

Foot Soldier

Very rare1.1%

Finish the objective without using any vehicles/turrets in Operation E, Mission 4

The Enemy of my Friend

Very rare1.1%

Get a higher individual score than your partner on all co-op missions

Complete all Operation F mission Assault Ops

Vidmaster Challenge

Very rare1.0%

Complete Operation E, Mission 1 with the Hollow and Black Eye Skulls active

Vidmaster Challenge 2.0

Ultra rare0.9%

Complete Operation F, Mission 4 with the Blind and Thunderstorm Skulls active

Distinguished Service

Ultra rare0.8%

Earn all medals in the campaign at least once

Dynamic Duo

Ultra rare0.7%

Earn all Gold stars in all co-op missions

The Company of Strangers

Ultra rare0.7%

Complete a co-op mission with at least 5 different players

Pension Plan

Ultra rare0.6%

Earn 25000 XP throughout your career

Overachiever

Ultra rare0.5%

Earn all co-op medals at least once

Extermination

Ultra rare0.5%

Kill 10,000 enemies in co-op

117

Ultra rare0.5%

Earn all Gold stars in all operation missions

Extra Credit

Ultra rare0.3%

Complete all campaign mission specific Assault Ops