Kill 25 drones without friendly fire. Four marines must be present in the mission.

Complete a mission with no friendly fire incidents. Four marines must be present in the mission.

Deliver the finishing blow to a Swarm Shieldbug.

Kill 6 Swarm with a single Grenade.

Complete a mission with better than 90% accuracy.

Kill at least 25 aliens on Normal difficulty or higher and finish the mission without taking any damage.

Destroy all Swarm Eggs in a mission without allowing any to hatch.

Kill 100 Swarm Grubs.

Kill a Swarm Parasite with a melee attack.

Kill 20 Swarm with melee attacks in a single mission.

Kill 5 Swarm with explosive barrels in a single mission.

Cure an Infested marine.

Complete 10 wire hacks without access being logged.

Complete 10 computer hacks without access being logged.

Heal all 4 marines with a single Heal Beacon.

Kill 15 Swarm with all four marines under the effects of a Damage Amp in a single mission.

Successfully perform 5 fast reloads in a row.

Successfully perform a fast reload.

Heal 300 points of damage in a single mission without dealing any non-melee damage to the Swarm.

Guard the squad's tech so that he takes no damage during the hack.

Finish a mission without the tech getting killed.

Stun 6 Swarm with a single Stun Grenade.

Seal a door with the welder.

Roll under a Swarm Ranger projectile.