Defeat Tremonius with the Skewer.

Destroy both Phantoms before they leave Outpost Tremonius.

Kill the Tower commander with a Plasma grenade.

Kill an enemy with the Banished mining laser.

Complete the Conservatory in less than 15 minutes.

Eliminate all enemies at the South Beacon with a Scorpion Tank.

In the Nexus, kill the Hunter pair with melee final blows.

Kill 40 enemies with the Stalker Rifle at the Command Spire.

Kill one Chieftain and use his turret to kill another in the Repository.

Defeat War Chief Escharum without ever fully losing your shields.

Breach the Auditorium in under three minutes.

In co-op, capture all Forward Operating Bases on any difficulty.

In co-op, complete all seven Banished outposts on any difficulty.

In co-op, answer all UNSC distress calls on any difficulty.

In co-op, eliminate all Banished High-Value Targets on any difficulty.

In co-op, kill 100 enemies while all players are riding air vehicles.

In co-op, splatter 50 enemies while riding in a vehicle with another player.

In co-op, kill 50 enemies while riding a Mongoose with another player.

Kill 5 enemies with a Sniper Rifle from a vehicle. All players aboard vehicle share progress.

Kill 5 enemies with a Gravity Hammer from a vehicle. All players aboard vehicle share progress.

In co-op, kill a Hunter and its bond brother within three seconds of each other.

In co-op, destroy all cooling towers at the Dig Site within 60 seconds of each other.

In co-op, destroy four Fuel Silos within five seconds at either Ransom Keep or the Forge of Teash.

In co-op, lower all three gates within 15 seconds of each other at Riven Gate.