You can equip up to two skulls per mission. Earn Steam achievements, complete missions and compete against your friends for the top scores in the leaderboards. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. Several explosives that last for 2.5 seconds. Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Instant shield recharge and invincible for 8 seconds.Įxplosive homing drone that remains active for 10 seconds. This photo, released by North Koreas official Korean Central News Agency on Sept. Halo: Spartan Strike has 20 Achievements worth 200 points. Each of them have various recharge times. Besides the standard Bubble Shield that deploys a ten second dome shield as protection against enemy fire, the following armor is also available.