Sentinel 4: Dark Star

Kill 50 Aliens

Uncommon37.8%

Kill 50 enemies

Campaign Mission 1

Uncommon37.4%

Complete campaign mission 1

Build 10 Turrets

Uncommon35.7%

Build 10 turrets

Campaign Mission 2

Uncommon34.5%

Complete campaign mission 2

Kill 500 Aliens

Uncommon32.7%

Kill 500 enemies

Campaign Mission 3

Uncommon31.4%

Complete campaign mission 3

Campaign Mission 4

Uncommon29.1%

Complete campaign mission 4

Campaign Mission 5

Uncommon27.1%

Complete campaign mission 5

Stronghold Rookie

Uncommon25.0%

Use 10 Stronghold abilities

Build 100 Turrets

Uncommon24.6%

Build 100 turrets

Kill 5000 Aliens

Uncommon24.0%

Kill 5000 enemies

Campaign 2 Mission 1

Uncommon23.2%

Complete mission 1 of the second mini-campaign

Campaign Mission 6

Uncommon22.5%

Complete campaign mission 6

Sentinel Gunner

Uncommon21.8%

Fire 10 Sentinel orbital weapons

Campaign Mission 7

Uncommon20.4%

Complete campaign mission 7

Campaign Mission 8

Uncommon18.7%

Complete campaign mission 8

Campaign Mission 9

Uncommon17.7%

Complete campaign mission 9

Campaign Mission 10

Uncommon17.0%

Complete campaign mission 10

Campaign 2 Mission 2

Uncommon16.4%

Complete mission 2 of the second mini-campaign

Campaign Mission 11

Uncommon16.1%

Complete campaign mission 11

Nexus Recruit

Uncommon16.0%

Reach Nexus rank 5

Stronghold Squaddie

Uncommon16.0%

Use 100 Stronghold abilities

Campaign Mission 12

Uncommon15.8%

Complete campaign mission 12

Campaign Mission 13

Uncommon15.0%

Complete campaign mission 13

Campaign Mission 14

Uncommon14.5%

Complete campaign mission 14

Kill 50000 Aliens

Uncommon13.9%

Kill 50000 enemies

Campaign Mission 15

Uncommon13.6%

Complete campaign mission 15

Sentinel Marksman

Uncommon13.3%

Fire 100 Sentinel orbital weapons

Campaign Mission 16

Uncommon13.2%

Complete campaign mission 16

Campaign 2 Mission 3

Uncommon13.0%

Complete mission 3 of the second mini-campaign

Campaign Mission 17

Uncommon12.9%

Complete campaign mission 17

Campaign Mission 18

Uncommon12.7%

Complete campaign mission 18

Build 1000 Turrets

Uncommon12.1%

Build 1000 turrets

Campaign Mission 19

Uncommon12.1%

Complete campaign mission 19

Nexus Sergeant

Uncommon11.9%

Reach Nexus rank 10

Campaign Mission 20

Uncommon11.8%

Complete campaign mission 20

Campaign 2 Mission 4

Uncommon11.7%

Complete mission 4 of the second mini-campaign

Campaign Mission 22

Uncommon11.3%

Complete campaign mission 22

Campaign Mission 21

Uncommon11.2%

Complete campaign mission 21

Campaign Mission 23

Uncommon11.1%

Complete campaign mission 23

Campaign Mission 24

Uncommon10.7%

Complete campaign mission 24

Campaign 2 Mission 5

Uncommon10.5%

Complete mission 5 of the second mini-campaign

Campaign Mission 25

Uncommon10.2%

Complete campaign mission 25

Campaign Mission 26

Rare9.9%

Complete campaign mission 26

Defender Defender

Rare8.6%

Complete level 6 (Alliance) without losing any Xenite defenders

Turret Engineer

Rare7.2%

Fully upgrade a turret in the armoury

Path Defender

Rare6.3%

Complete level 2 (Fortification) using only path deployable weapons

War Machine

Rare6.0%

Reach maximum level with any Commander

Stronghold General

Rare6.0%

Use 1000 Stronghold abilities

Laser Spammer

Rare5.1%

Complete level 10 (Titan) using only Laser Turrets

Sentinel Admiral

Very rare4.6%

Fire 1000 Sentinel orbital weapons

Psycho Campaigner

Very rare3.5%

Finish the campaign on Psycho difficulty

Kill 500000 Aliens

Very rare3.1%

Kill 500000 enemies

Fully Operational Mothership

Very rare2.3%

Buy every upgrade in the armoury